Positions de référence évaluées par gnubg (0 et 2 plis)

32 positions (ouvertures, milieu, prime, blitz, course, sortie, videau,
match, Crawford, Jacoby), générées par make reference ; format documenté
dans tests/reference/README.md, vérifié par tests/test_reference.sh.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/reference/README.md

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+# Positions de référence
+
+Ce dossier contient des positions de backgammon évaluées par le GNU Backgammon
+de bureau, compilé dans Docker au commit figé par l'ADR 0005. Le moteur
+embarqué d'Ustagammon (et son `engine-cli`) doit retrouver ces résultats, à
+une tolérance près. **Ce document est le contrat du format** : `engine-cli`
+produit pour une position un objet de même structure que la partie `plies`
+d'un fichier de résultat.
+
+| Fichier | Rôle |
+| --- | --- |
+| `positions.json` | Positions d'entrée, versionnées, écrites à la main |
+| `results/<id>.json` | Résultats de gnubg, un fichier par position, générés |
+| `generate.py` | Script exécuté dans gnubg qui produit `results/` |
+
+Commandes :
+
+```
+make reference-image   # construit l'image Docker du gnubg de référence
+make reference         # régénère results/ (une vingtaine de secondes)
+make test              # vérifie la cohérence (tests/test_reference.sh)
+```
+
+`make reference` est déterministe : deux exécutions donnent des fichiers
+identiques (`git diff --exit-code tests/reference`).
+
+## Référence utilisée
+
+- **gnubg** : GNU Backgammon 1.08.003, commit
+  14b67984737ded0f6de43d63dcb789f729d9b06b, compilé par
+  `docker/gnubg-reference/Dockerfile` (Debian trixie, sans interface
+  graphique, SIMD SSE2 forcé, drapeaux par défaut de gnubg `-O3 -ffast-math`).
+- **Données** : `gnubg.weights` du dépôt, et `gnubg.wd`, `gnubg_os0.bd`,
+  `gnubg_ts0.bd` produits dans l'image par les outils officiels (`makeweights`,
+  `makebearoff -o 6 -s 7999999`, `makebearoff -t 6x6`). Leurs sommes SHA-256
+  sont dans l'image, `/usr/local/share/gnubg/donnees.sha256` ; le moteur
+  embarqué doit utiliser exactement ces fichiers.
+- **Table d'équité de match** : Kazaross-XG2 (`met/Kazaross-XG2.xml`), la
+  table par défaut de gnubg.
+- **Autres réglages** : ceux par défaut de gnubg. En particulier les castors
+  (beavers) sont autorisés en partie libre (ils ne figurent pas dans le Match
+  ID) et ignorés en match, et le filtre de coups est le filtre « Normal ».
+
+## Positions d'entrée : `positions.json`
+
+```json
+{
+  "positions": [
+    {
+      "id": "opening-31",
+      "type": "move",
+      "categories": ["opening"],
+      "description": "Position de départ, premier coup 3-1, partie libre.",
+      "position_id": "4HPwATDgc/ABMA",
+      "match_id": "cIkFAAAAAAAA",
+      "dice": [3, 1]
+    }
+  ]
+}
+```
+
+- `id` : identifiant unique, sert de nom de fichier dans `results/`.
+- `type` : `"move"` (dés jetés : quel coup jouer) ou `"cube"` (dés pas encore
+  jetés : faut-il doubler).
+- `categories` : étiquettes de couverture. Valeurs utilisées : `opening`,
+  `middlegame`, `prime`, `blitz`, `race`, `bearoff`, `edge_case`,
+  `cube_no_double`, `cube_double_take`, `cube_double_pass`, `cube_redouble`,
+  `cube_too_good`, `match`, `crawford`, `post_crawford`, `jacoby`.
+- `position_id`, `match_id` : la position au format GNU Backgammon. Le Match ID
+  porte tout le contexte : dés, joueur au trait, videau et propriétaire,
+  longueur du match, score, Crawford, règle Jacoby.
+- `dice` : les dés, redondants avec le Match ID (le générateur vérifie qu'ils
+  concordent) ; `null` pour une décision de videau.
+
+Pour ajouter une position : obtenir ses identifiants dans gnubg (ils
+s'affichent sous le plateau, ou `show gnubgid`), l'ajouter à
+`positions.json`, puis `make reference`.
+
+## Résultats : `results/<id>.json`
+
+```json
+{
+  "id": "opening-31",
+  "type": "move",
+  "categories": ["opening"],
+  "description": "…",
+  "position_id": "4HPwATDgc/ABMA",
+  "match_id": "cIkFAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [3, 1],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": { "evaluation": { … }, "moves": { … } },
+    "2": { "evaluation": { … }, "moves": { … } }
+  }
+}
+```
+
+`context` est le contexte tel que gnubg l'a relu dans le Match ID :
+`match_length` vaut 0 en partie libre ; `score_player` est le score du joueur
+au trait ; `cube_owner` vaut `centered`, `player` (le joueur au trait) ou
+`opponent` ; `beavers` dit si les castors comptent (partie libre seulement).
+Voir `results/opening-31.json` pour un fichier complet.
+
+### Niveaux : `plies`
+
+Les clés `"0"` et `"2"` sont des niveaux comptés en **plis à la manière de
+gnubg** : 0 pli = évaluation statique du réseau de neurones, 2 plis = deux
+demi-coups de recherche. Ce sont les réglages prédéfinis « 0ply » et « 2ply »
+de gnubg (`aecSettings` dans `eval.c`), sans bruit : cubeful, déterministe,
+élagage (`prune`) désactivé à 0 pli et activé à 2 plis.
+
+### Conventions communes
+
+- **Point de vue** : tout est donné du point de vue du **joueur au trait**
+  (celui qui a les dés ou qui doit décider de doubler). Une équité positive
+  lui est favorable.
+- **Probabilités** (`probabilities`), entre 0 et 1, issues des sorties du
+  réseau de gnubg :
+  - `win` : probabilité de gagner la partie ;
+  - `win_gammon` : de gagner au moins un gammon (backgammons compris) ;
+  - `win_backgammon` : de gagner un backgammon ;
+  - `lose_gammon` : de perdre au moins un gammon (backgammons compris) ;
+  - `lose_backgammon` : de perdre un backgammon.
+  La probabilité de perdre est `1 - win`.
+- **Équités** : en points pour un videau à 1. En match, gnubg convertit sa
+  probabilité de gagner le match en « équité monétaire normalisée »
+  (`mwc2eq`) ; c'est cette valeur qui est donnée.
+- **Nombres** : gnubg calcule en float32 ; chaque nombre est écrit sous la
+  forme décimale la plus courte qui redonne exactement ce float32.
+
+### `evaluation` : la position avant le jet des dés
+
+```json
+"evaluation": {
+  "probabilities": { "win": 0.52483594, "win_gammon": 0.14950693,
+                     "win_backgammon": 0.006851064, "lose_gammon": 0.124798514,
+                     "lose_backgammon": 0.0052878163 },
+  "equity": 0.07594353
+}
+```
+
+Sortie de `gnubg.evaluate` : les cinq probabilités et l'équité **sans videau**
+(cubeless) correspondante, au score du match, pour la position *avant* que le
+joueur au trait jette les dés (même pour une position de type `move`).
+
+### `moves` : classement des coups (type `move`)
+
+```json
+"moves": {
+  "legal_move_count": 16,
+  "ranking": [
+    { "rank": 1, "move": "8/5 6/5", "ply": 1, "equity": 0.20373425,
+      "equity_diff": 0.0, "probabilities": { … } },
+    …
+  ]
+}
+```
+
+- `legal_move_count` : nombre de coups légaux au sens de gnubg, c'est-à-dire de
+  **positions d'arrivée distinctes** (deux suites de déplacements qui mènent à
+  la même position comptent une fois). 0 si aucun coup n'est possible.
+- `ranking` : les 10 meilleurs coups (tous s'il y en a moins), dans l'ordre de
+  la commande `hint` de gnubg :
+  - `move` : notation de gnubg (`FormatMove`), points comptés du point de vue
+    du joueur au trait, `bar` et `off`, `*` pour une frappe, `(2)` pour un
+    déplacement répété ;
+  - `ply` : niveau auquel ce coup a réellement été évalué. À 2 plis, gnubg
+    évalue d'abord tous les coups à 0 pli puis ne garde pour les plis
+    suivants que les meilleurs (filtre « Normal » : à 0 pli les 12 meilleurs
+    au plus dans un écart de 0,24 ; à 1 pli les 6 meilleurs au plus dans un
+    écart de 0,12). Les coups éliminés gardent une évaluation à 0 ou 1 pli.
+    Si un seul coup survit à un filtre, gnubg s'arrête là : c'est le cas de
+    l'exemple ci-dessus (3-1 d'ouverture à 2 plis), où `8/5 6/5` reste seul
+    après le filtre de 1 pli et garde donc `"ply": 1`, comme dans l'affichage
+    « Cubeful 1-ply » de gnubg. Les coups forcés restent à 0 pli ;
+  - `equity` : équité **avec videau** (cubeful) après ce coup ;
+  - `equity_diff` : `equity` moins celle du premier coup (0 ou négatif) ;
+  - `probabilities` : les cinq probabilités après ce coup, toujours du point de
+    vue du joueur qui vient de jouer.
+
+Le classement reproduit exactement `hint` : `FindnSaveBestMoves` avec
+`fAnalyse` vrai, puis `RefreshMoveList` qui départage les équités égales.
+
+### `cube` : décision de videau (type `cube`)
+
+```json
+"cube": {
+  "no_double": 0.83056116,
+  "double_take": 0.9218164,
+  "double_pass": 1.0,
+  "optimal": 0.9218164,
+  "decision": "DOUBLE_TAKE",
+  "decision_text": "Double, take"
+}
+```
+
+Sortie de `gnubg.cfevaluate` (`GeneralCubeDecisionE` puis
+`FindCubeDecision`), en équités avec videau ramenées à un videau de valeur 1
+(même quand le videau est déjà à 2, voir `cube-redouble`) ; exemple tiré de `cube-double-take` :
+
+- `no_double` : si le joueur au trait ne double pas ;
+- `double_take` : s'il double et que l'adversaire prend ;
+- `double_pass` : s'il double et que l'adversaire passe ; vaut 1 par
+  construction (en match, la probabilité de gagner le match après le passe,
+  tirée de la table d'équité, est normalisée à 1 par `mwc2eq`) ;
+- `optimal` : l'équité retenue après les meilleures décisions des deux côtés ;
+- `decision` : nom de la décision dans l'énumération `cubedecision` de
+  `eval.h` de gnubg (`NODOUBLE_TAKE`, `DOUBLE_TAKE`, `DOUBLE_PASS`,
+  `TOOGOOD_PASS`, `REDOUBLE_TAKE`, `NODOUBLE_DEADCUBE`…) ;
+- `decision_text` : le libellé anglais correspondant de gnubg.
+
+## Comparaison avec le moteur embarqué
+
+Une concordance au bit près n'est pas attendue (ADR 0005) : `-ffast-math` et
+le jeu d'instructions (SSE2 ici, NEON sur téléphone, C générique en
+WebAssembly) changent les derniers chiffres. Les tests de concordance devront
+donc comparer les nombres avec une tolérance, et accepter qu'entre deux coups
+d'équités presque égales l'ordre s'inverse.

tests/reference/generate.py

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+# Générateur des résultats de référence d'Ustagammon.
+#
+# Ce script s'exécute DANS gnubg (scripting Python intégré), dans l'image
+# Docker ustagammon/gnubg-reference : voir `make reference` et README.md.
+# Il lit positions.json et écrit un fichier results/<id>.json par position.
+#
+# Rien n'est calculé ici : toutes les valeurs viennent de gnubg. Le script ne
+# fait que piloter gnubg, vérifier ses réglages et mettre en forme.
+
+import json
+import os
+import struct
+
+import gnubg
+
+FOLDER = os.environ.get("REFERENCE_DIR", "/reference")
+PLIES = (0, 2)  # niveaux en plis gnubg : 0 = évaluation statique du réseau
+MAX_MOVES = 10  # coups gardés dans le classement (tous s'il y en a moins)
+MET = "Kazaross-XG2"  # table d'équité de match par défaut de gnubg
+
+# Noms des décisions de videau : énumération cubedecision de eval.h, dans
+# l'ordre (gnubg renvoie l'indice).
+CUBE_DECISIONS = [
+    "DOUBLE_TAKE", "DOUBLE_PASS", "NODOUBLE_TAKE", "TOOGOOD_TAKE",
+    "TOOGOOD_PASS", "DOUBLE_BEAVER", "NODOUBLE_BEAVER", "REDOUBLE_TAKE",
+    "REDOUBLE_PASS", "NO_REDOUBLE_TAKE", "TOOGOODRE_TAKE", "TOOGOODRE_PASS",
+    "NO_REDOUBLE_BEAVER", "NODOUBLE_DEADCUBE", "NO_REDOUBLE_DEADCUBE",
+    "NOT_AVAILABLE", "OPTIONAL_DOUBLE_TAKE", "OPTIONAL_REDOUBLE_TAKE",
+    "OPTIONAL_DOUBLE_BEAVER", "OPTIONAL_DOUBLE_PASS", "OPTIONAL_REDOUBLE_PASS",
+]
+
+
+def f32(x):
+    """Écriture décimale la plus courte qui redonne exactement le float32
+    calculé par gnubg (gnubg travaille en simple précision)."""
+    target = struct.pack("<f", x)
+    for digits in range(1, 10):
+        text = "%.*g" % (digits, x)
+        if struct.pack("<f", float(text)) == target:
+            return float(text)
+    raise ValueError(x)
+
+
+def probabilities(p):
+    return {
+        "win": f32(p[0]),
+        "win_gammon": f32(p[1]),
+        "win_backgammon": f32(p[2]),
+        "lose_gammon": f32(p[3]),
+        "lose_backgammon": f32(p[4]),
+    }
+
+
+def eval_context(ply):
+    """Réglage prédéfini « 0ply » ou « 2ply » de gnubg (aecSettings, eval.c)."""
+    return {"cubeful": 1, "plies": ply, "deterministic": 1,
+            "prune": 1 if ply > 0 else 0, "noise": 0.0}
+
+
+def set_chequer_settings(ply):
+    """Règle l'évaluation utilisée par la commande hint de gnubg."""
+    prefix = "set evaluation chequerplay evaluation "
+    gnubg.command("set evaluation chequerplay type evaluation")
+    gnubg.command(prefix + "plies %d" % ply)
+    gnubg.command(prefix + "cubeful on")
+    gnubg.command(prefix + "prune " + ("on" if ply > 0 else "off"))
+    gnubg.command(prefix + "deterministic on")
+    gnubg.command(prefix + "noise 0")
+
+
+def load_position(pos):
+    """Installe la position et vide le cache d'évaluation : chaque calcul se
+    fait comme sur un moteur neuf. Vérifie que gnubg relit les mêmes IDs."""
+    gnubg.command("clear cache")
+    gnubg.command("set gnubgid %s:%s" % (pos["position_id"], pos["match_id"]))
+    read_back = (gnubg.positionid(), gnubg.matchid())
+    if read_back != (pos["position_id"], pos["match_id"]):
+        raise SystemExit("%s : gnubg relit %s" % (pos["id"], read_back))
+
+
+def cube_info():
+    """Contexte du videau de la position courante, tel que gnubg l'utilise
+    pour ses propres analyses (GetMatchStateCubeInfo). gnubg.cubeinfo()
+    déduit les castors du nombre de castors déjà joués dans la partie (0) ;
+    gnubg, lui, les autorise en partie libre (réglage par défaut nBeavers = 3)
+    et les ignore en match."""
+    ci = gnubg.cubeinfo()
+    ci["beavers"] = 1 if ci["matchto"] == 0 else 0
+    return ci
+
+
+def game_context(pos):
+    ci = cube_info()
+    dice = gnubg.posinfo()["dice"]
+    dice = list(dice) if dice[0] else None
+    if dice != pos["dice"]:
+        raise SystemExit("%s : dés %s dans le Match ID, %s dans positions.json"
+                         % (pos["id"], dice, pos["dice"]))
+    me = ci["move"]
+    owner = ci["cubeowner"]
+    return {
+        "dice": dice,
+        "match_length": ci["matchto"],
+        "score_player": ci["score"][me],
+        "score_opponent": ci["score"][1 - me],
+        "crawford": bool(ci["crawford"]),
+        "jacoby": bool(ci["jacoby"]),
+        "beavers": bool(ci["beavers"]),
+        "cube_value": ci["cube"],
+        "cube_owner": "centered" if owner < 0 else "player" if owner == me else "opponent",
+    }
+
+
+def evaluate(ply):
+    r = gnubg.evaluate(gnubg.board(), cube_info(), eval_context(ply))
+    return {"probabilities": probabilities(r[:5]), "equity": f32(r[5])}
+
+
+def rank_moves(pos, ply):
+    set_chequer_settings(ply)
+    load_position(pos)  # efface aussi l'analyse que gnubg garde en mémoire
+    hint = gnubg.hint()
+    moves = hint["hint"] if hint else []
+    ranking = []
+    for m in moves[:MAX_MOVES]:
+        ctx = m.get("context", {})
+        if m["type"] != "eval" or ctx["noise"] != 0 or not ctx["cubeful"]:
+            raise SystemExit("%s : coup évalué autrement que prévu : %r" % (pos["id"], m))
+        ranking.append({
+            "rank": m["movenum"],
+            "move": m["move"],
+            "ply": ctx["plies"],
+            "equity": f32(m["equity"]),
+            "equity_diff": f32(m["eqdiff"]),
+            "probabilities": probabilities(m["details"]["probs"]),
+        })
+    return {"legal_move_count": len(moves), "ranking": ranking}
+
+
+def cube_decision(ply):
+    r = gnubg.cfevaluate(gnubg.board(), cube_info(), eval_context(ply))
+    return {
+        "no_double": f32(r[1]),
+        "double_take": f32(r[2]),
+        "double_pass": f32(r[3]),
+        "optimal": f32(r[0]),
+        "decision": CUBE_DECISIONS[r[4]],
+        "decision_text": r[5],
+    }
+
+
+def check_settings():
+    """Vérifie les réglages par défaut dont dépendent les résultats."""
+    # Filtre « Normal » pour 2 plis : (niveau, coups acceptés, en plus, écart).
+    expected = [(0, 0, 12, 0.24), (1, 0, 6, 0.12)]
+    two_ply = [(f["level"], f["acceptmoves"], f["extramoves"], round(f["threshold"], 6))
+               for f in gnubg.getevalhintfilter() if f["ply"] == 2]
+    if two_ply != expected:
+        raise SystemExit("filtre de coups inattendu : %r" % (two_ply,))
+    if MET not in gnubg.show("matchequitytable"):
+        raise SystemExit("table d'équité de match inattendue")
+
+
+def main():
+    with open(os.path.join(FOLDER, "positions.json"), encoding="utf-8") as f:
+        positions = json.load(f)["positions"]
+    with open("/usr/local/share/gnubg/commit") as f:
+        commit = f.read().strip()
+    check_settings()
+    out_dir = os.path.join(FOLDER, "results")
+    os.makedirs(out_dir, exist_ok=True)
+    for pos in positions:
+        load_position(pos)
+        result = {
+            "id": pos["id"],
+            "type": pos["type"],
+            "categories": pos["categories"],
+            "description": pos["description"],
+            "position_id": pos["position_id"],
+            "match_id": pos["match_id"],
+            "gnubg_commit": commit,
+            "met": MET,
+            "context": game_context(pos),
+            "plies": {},
+        }
+        for ply in PLIES:
+            load_position(pos)
+            level = {"evaluation": evaluate(ply)}
+            if pos["type"] == "move":
+                level["moves"] = rank_moves(pos, ply)
+            else:
+                level["cube"] = cube_decision(ply)
+            result["plies"][str(ply)] = level
+        with open(os.path.join(out_dir, pos["id"] + ".json"), "w", encoding="utf-8") as f:
+            json.dump(result, f, ensure_ascii=False, indent=2)
+            f.write("\n")
+        print("référence écrite :", pos["id"])
+
+
+main()

tests/reference/positions.json

@@ -0,0 +1,440 @@
+{
+  "positions": [
+    {
+      "id": "opening-31",
+      "type": "move",
+      "categories": [
+        "opening"
+      ],
+      "description": "Position de départ, premier coup 3-1, partie libre.",
+      "position_id": "4HPwATDgc/ABMA",
+      "match_id": "cIkFAAAAAAAA",
+      "dice": [
+        3,
+        1
+      ]
+    },
+    {
+      "id": "opening-42",
+      "type": "move",
+      "categories": [
+        "opening"
+      ],
+      "description": "Position de départ, premier coup 4-2, partie libre.",
+      "position_id": "4HPwATDgc/ABMA",
+      "match_id": "cAkKAAAAAAAA",
+      "dice": [
+        4,
+        2
+      ]
+    },
+    {
+      "id": "opening-65",
+      "type": "move",
+      "categories": [
+        "opening"
+      ],
+      "description": "Position de départ, premier coup 6-5, partie libre.",
+      "position_id": "4HPwATDgc/ABMA",
+      "match_id": "cAkXAAAAAAAA",
+      "dice": [
+        6,
+        5
+      ]
+    },
+    {
+      "id": "opening-21",
+      "type": "move",
+      "categories": [
+        "opening"
+      ],
+      "description": "Position de départ, premier coup 2-1, partie libre.",
+      "position_id": "4HPwATDgc/ABMA",
+      "match_id": "cAkFAAAAAAAA",
+      "dice": [
+        2,
+        1
+      ]
+    },
+    {
+      "id": "opening-64-match",
+      "type": "move",
+      "categories": [
+        "opening",
+        "match"
+      ],
+      "description": "Position de départ, premier coup 6-4, match en 5 points à 0-0.",
+      "position_id": "4HPwATDgc/ABMA",
+      "match_id": "cAmzAAAAAAAE",
+      "dice": [
+        6,
+        4
+      ]
+    },
+    {
+      "id": "middlegame-1",
+      "type": "move",
+      "categories": [
+        "middlegame"
+      ],
+      "description": "Milieu de partie avec contact, 6-4 à jouer.",
+      "position_id": "mM/gATCw5+ABMA",
+      "match_id": "cAkTAAAAAAAA",
+      "dice": [
+        6,
+        4
+      ]
+    },
+    {
+      "id": "middlegame-2",
+      "type": "move",
+      "categories": [
+        "middlegame"
+      ],
+      "description": "Milieu de partie avec contact et dames isolées, 5-3 à jouer.",
+      "position_id": "xGfhATDQ2+BBIA",
+      "match_id": "cIkOAAAAAAAA",
+      "dice": [
+        5,
+        3
+      ]
+    },
+    {
+      "id": "middlegame-holding",
+      "type": "move",
+      "categories": [
+        "middlegame"
+      ],
+      "description": "Jeu de tenue (point 20 tenu), 6-2 à jouer.",
+      "position_id": "mLfBARg4z8EBAw",
+      "match_id": "cAkLAAAAAAAA",
+      "dice": [
+        6,
+        2
+      ]
+    },
+    {
+      "id": "prime-1",
+      "type": "move",
+      "categories": [
+        "prime"
+      ],
+      "description": "Prime de sept points (4 à 10) contre deux dames bloquées, 6-5 à jouer.",
+      "position_id": "sOfgASjYbtsAAA",
+      "match_id": "cAkXAAAAAAAA",
+      "dice": [
+        6,
+        5
+      ]
+    },
+    {
+      "id": "prime-vs-prime",
+      "type": "move",
+      "categories": [
+        "prime"
+      ],
+      "description": "Prime contre prime, 4-2 à jouer.",
+      "position_id": "4LZtAAbAbZsBAw",
+      "match_id": "cAkKAAAAAAAA",
+      "dice": [
+        4,
+        2
+      ]
+    },
+    {
+      "id": "blitz-1",
+      "type": "move",
+      "categories": [
+        "blitz"
+      ],
+      "description": "Attaque : deux dames adverses sur la barre, 4-3 à jouer.",
+      "position_id": "4Dn4AGiynYMHAA",
+      "match_id": "cAkOAAAAAAAA",
+      "dice": [
+        4,
+        3
+      ]
+    },
+    {
+      "id": "blitz-2",
+      "type": "move",
+      "categories": [
+        "blitz"
+      ],
+      "description": "Attaque : une dame adverse sur la barre, double 3-3 à jouer.",
+      "position_id": "4HPwAVC0XYMHAA",
+      "match_id": "cIkNAAAAAAAA",
+      "dice": [
+        3,
+        3
+      ]
+    },
+    {
+      "id": "race-1",
+      "type": "move",
+      "categories": [
+        "race"
+      ],
+      "description": "Course courte sans contact, 6-2 à jouer.",
+      "position_id": "trsXAADs7mwAAA",
+      "match_id": "cAkLAAAAAAAA",
+      "dice": [
+        6,
+        2
+      ]
+    },
+    {
+      "id": "race-2",
+      "type": "move",
+      "categories": [
+        "race"
+      ],
+      "description": "Course longue sans contact, 5-4 à jouer.",
+      "position_id": "cLezAQBwN2cGAA",
+      "match_id": "cIkSAAAAAAAA",
+      "dice": [
+        5,
+        4
+      ]
+    },
+    {
+      "id": "bearoff-short",
+      "type": "move",
+      "categories": [
+        "bearoff"
+      ],
+      "description": "Sortie à peu de dames (base à deux côtés), 2-1 à jouer.",
+      "position_id": "TQAAYAsAAAAAAA",
+      "match_id": "cAkFAAAAAAAA",
+      "dice": [
+        2,
+        1
+      ]
+    },
+    {
+      "id": "bearoff-15-checkers",
+      "type": "move",
+      "categories": [
+        "bearoff"
+      ],
+      "description": "Sortie à 15 dames contre 15 (base à un côté), 6-5 à jouer.",
+      "position_id": "290NAADb7g4AAA",
+      "match_id": "cAkXAAAAAAAA",
+      "dice": [
+        6,
+        5
+      ]
+    },
+    {
+      "id": "bearoff-doubles",
+      "type": "move",
+      "categories": [
+        "bearoff"
+      ],
+      "description": "Sortie, double 6-6 à jouer.",
+      "position_id": "xgAA4MgAAAAAAA",
+      "match_id": "cAkbAAAAAAAA",
+      "dice": [
+        6,
+        6
+      ]
+    },
+    {
+      "id": "no-legal-move",
+      "type": "move",
+      "categories": [
+        "edge_case"
+      ],
+      "description": "Dame sur la barre face à un jan fermé : aucun coup légal avec 5-5.",
+      "position_id": "27YBBwAcz8EDQA",
+      "match_id": "cIkWAAAAAAAA",
+      "dice": [
+        5,
+        5
+      ]
+    },
+    {
+      "id": "forced-move",
+      "type": "move",
+      "categories": [
+        "edge_case"
+      ],
+      "description": "Deux dames sur la barre, un seul point d'entrée : coup forcé avec 3-1.",
+      "position_id": "tm3ABwBw5+ABYA",
+      "match_id": "cIkFAAAAAAAA",
+      "dice": [
+        3,
+        1
+      ]
+    },
+    {
+      "id": "cube-no-double",
+      "type": "cube",
+      "categories": [
+        "cube_no_double"
+      ],
+      "description": "Position presque égale, videau centré : pas de double.",
+      "position_id": "2J0dBgDYnRsGAA",
+      "match_id": "cAkAAAAAAAAA",
+      "dice": null
+    },
+    {
+      "id": "cube-double-take",
+      "type": "cube",
+      "categories": [
+        "cube_double_take",
+        "race"
+      ],
+      "description": "Course avec avance modérée, videau centré : double, prend.",
+      "position_id": "6O5uAAC4uzsAAA",
+      "match_id": "cAkAAAAAAAAA",
+      "dice": null
+    },
+    {
+      "id": "cube-double-pass",
+      "type": "cube",
+      "categories": [
+        "cube_double_pass",
+        "race"
+      ],
+      "description": "Course avec grosse avance, videau centré : double, passe.",
+      "position_id": "cHd3AADvvQMAAA",
+      "match_id": "cAkAAAAAAAAA",
+      "dice": null
+    },
+    {
+      "id": "cube-redouble",
+      "type": "cube",
+      "categories": [
+        "cube_redouble",
+        "race"
+      ],
+      "description": "Course avec avance, videau à 2 possédé par le joueur au trait : redouble.",
+      "position_id": "6O5uAAC4uzsAAA",
+      "match_id": "UQkAAAAAAAAA",
+      "dice": null
+    },
+    {
+      "id": "cube-blitz",
+      "type": "cube",
+      "categories": [
+        "cube_too_good",
+        "blitz"
+      ],
+      "description": "Attaque forte, videau centré, partie libre sans règle Jacoby.",
+      "position_id": "4Dn4AGiynYMHAA",
+      "match_id": "cAkAAAAAAAAE",
+      "dice": null
+    },
+    {
+      "id": "jacoby-cube",
+      "type": "cube",
+      "categories": [
+        "jacoby",
+        "blitz"
+      ],
+      "description": "Même attaque que cube-blitz, avec la règle Jacoby.",
+      "position_id": "4Dn4AGiynYMHAA",
+      "match_id": "cAkAAAAAAAAA",
+      "dice": null
+    },
+    {
+      "id": "jacoby-move",
+      "type": "move",
+      "categories": [
+        "jacoby",
+        "blitz"
+      ],
+      "description": "Attaque avec la règle Jacoby, 6-4 à jouer.",
+      "position_id": "4HPwAVC0XYMHAA",
+      "match_id": "cAkTAAAAAAAA",
+      "dice": [
+        6,
+        4
+      ]
+    },
+    {
+      "id": "match-3-3-move",
+      "type": "move",
+      "categories": [
+        "match",
+        "middlegame"
+      ],
+      "description": "Match en 5 points, 2-2 (3-away 3-away), 5-3 à jouer.",
+      "position_id": "xGfhATDQ2+BBIA",
+      "match_id": "cImuACAAEAAE",
+      "dice": [
+        5,
+        3
+      ]
+    },
+    {
+      "id": "match-dmp-move",
+      "type": "move",
+      "categories": [
+        "match",
+        "middlegame"
+      ],
+      "description": "Match en 1 point (double match point), 6-2 à jouer.",
+      "position_id": "mLfBARg4z8EBAw",
+      "match_id": "cAkrAAAAAAAE",
+      "dice": [
+        6,
+        2
+      ]
+    },
+    {
+      "id": "match-7-cube",
+      "type": "cube",
+      "categories": [
+        "match",
+        "race"
+      ],
+      "description": "Match en 7 points, joueur au trait à 3, adversaire à 5 : décision de videau.",
+      "position_id": "cHd3AAC4uzsAAA",
+      "match_id": "cAngAFAAGAAE",
+      "dice": null
+    },
+    {
+      "id": "match-crawford-move",
+      "type": "move",
+      "categories": [
+        "match",
+        "crawford",
+        "blitz"
+      ],
+      "description": "Match en 5 points, partie Crawford, joueur au trait mené 2-4, 4-3 à jouer.",
+      "position_id": "4Dn4AGiynYMHAA",
+      "match_id": "8AmuAEAAEAAE",
+      "dice": [
+        4,
+        3
+      ]
+    },
+    {
+      "id": "match-crawford-cube",
+      "type": "cube",
+      "categories": [
+        "match",
+        "crawford",
+        "race"
+      ],
+      "description": "Match en 5 points, partie Crawford : videau mort.",
+      "position_id": "cHd3AAC4uzsAAA",
+      "match_id": "8AmgAEAAEAAE",
+      "dice": null
+    },
+    {
+      "id": "match-post-crawford-cube",
+      "type": "cube",
+      "categories": [
+        "match",
+        "post_crawford"
+      ],
+      "description": "Match en 5 points, après Crawford, joueur au trait mené 2-4 : videau.",
+      "position_id": "2J0dBgDYnRsGAA",
+      "match_id": "cAmgAEAAEAAE",
+      "dice": null
+    }
+  ]
+}

tests/reference/results/bearoff-15-checkers.json

@@ -0,0 +1,118 @@
+{
+  "id": "bearoff-15-checkers",
+  "type": "move",
+  "categories": [
+    "bearoff"
+  ],
+  "description": "Sortie à 15 dames contre 15 (base à un côté), 6-5 à jouer.",
+  "position_id": "290NAADb7g4AAA",
+  "match_id": "cAkXAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      5
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.5665677,
+          "win_gammon": 0.0,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.13313544
+      },
+      "moves": {
+        "legal_move_count": 2,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "6/off 5/off",
+            "ply": 0,
+            "equity": 0.4084316,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.6458684,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 2,
+            "move": "6/1 6/off",
+            "ply": 0,
+            "equity": 0.20709176,
+            "equity_diff": -0.20133983,
+            "probabilities": {
+              "win": 0.5739614,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.5665742,
+          "win_gammon": 0.0,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.13314843
+      },
+      "moves": {
+        "legal_move_count": 2,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "6/off 5/off",
+            "ply": 1,
+            "equity": 0.4440637,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.64587986,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 2,
+            "move": "6/1 6/off",
+            "ply": 1,
+            "equity": 0.21062364,
+            "equity_diff": -0.23344006,
+            "probabilities": {
+              "win": 0.5739729,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/bearoff-doubles.json

@@ -0,0 +1,90 @@
+{
+  "id": "bearoff-doubles",
+  "type": "move",
+  "categories": [
+    "bearoff"
+  ],
+  "description": "Sortie, double 6-6 à jouer.",
+  "position_id": "xgAA4MgAAAAAAA",
+  "match_id": "cAkbAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      6
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.2702983,
+          "win_gammon": 0.0,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0,
+          "lose_backgammon": 0.0
+        },
+        "equity": -0.4594034
+      },
+      "moves": {
+        "legal_move_count": 1,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "6/off(2) 4/off 1/off",
+            "ply": 0,
+            "equity": 0.8888838,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.9444419,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.2702983,
+          "win_gammon": 0.0,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0,
+          "lose_backgammon": 0.0
+        },
+        "equity": -0.4594034
+      },
+      "moves": {
+        "legal_move_count": 1,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "6/off(2) 4/off 1/off",
+            "ply": 0,
+            "equity": 0.8888838,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.9444419,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/bearoff-short.json

@@ -0,0 +1,174 @@
+{
+  "id": "bearoff-short",
+  "type": "move",
+  "categories": [
+    "bearoff"
+  ],
+  "description": "Sortie à peu de dames (base à deux côtés), 2-1 à jouer.",
+  "position_id": "TQAAYAsAAAAAAA",
+  "match_id": "cAkFAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      2,
+      1
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.38315403,
+          "win_gammon": 0.0,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0,
+          "lose_backgammon": 0.0
+        },
+        "equity": -0.23369193
+      },
+      "moves": {
+        "legal_move_count": 4,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "2/off 1/off",
+            "ply": 0,
+            "equity": -0.8607614,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.2701915,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 2,
+            "move": "3/off",
+            "ply": 0,
+            "equity": -0.8607614,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.2701915,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 3,
+            "move": "2/1 2/off",
+            "ply": 0,
+            "equity": -0.95561147,
+            "equity_diff": -0.09485006,
+            "probabilities": {
+              "win": 0.24164188,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 4,
+            "move": "3/1 2/1",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.1392386,
+            "probabilities": {
+              "win": 0.05070573,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.38315403,
+          "win_gammon": 0.0,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0,
+          "lose_backgammon": 0.0
+        },
+        "equity": -0.23369193
+      },
+      "moves": {
+        "legal_move_count": 4,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "2/off 1/off",
+            "ply": 2,
+            "equity": -0.8607614,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.2701915,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 2,
+            "move": "3/off",
+            "ply": 2,
+            "equity": -0.8607614,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.2701915,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 3,
+            "move": "2/1 2/off",
+            "ply": 2,
+            "equity": -0.95561147,
+            "equity_diff": -0.09485006,
+            "probabilities": {
+              "win": 0.24164188,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 4,
+            "move": "3/1 2/1",
+            "ply": 1,
+            "equity": -1.0,
+            "equity_diff": -0.1392386,
+            "probabilities": {
+              "win": 0.05070573,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.0,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/blitz-1.json

@@ -0,0 +1,342 @@
+{
+  "id": "blitz-1",
+  "type": "move",
+  "categories": [
+    "blitz"
+  ],
+  "description": "Attaque : deux dames adverses sur la barre, 4-3 à jouer.",
+  "position_id": "4Dn4AGiynYMHAA",
+  "match_id": "cAkOAAAAAAAA",
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+}

tests/reference/results/blitz-2.json

@@ -0,0 +1,342 @@
+{
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+  "type": "move",
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+    "blitz"
+  ],
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+            "ply": 1,
+            "equity": 0.9960891,
+            "equity_diff": -0.003910899,
+            "probabilities": {
+              "win": 0.85297924,
+              "win_gammon": 0.6440174,
+              "win_backgammon": 0.016305396,
+              "lose_gammon": 0.016591068,
+              "lose_backgammon": 0.00031312907
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/cube-blitz.json

@@ -0,0 +1,66 @@
+{
+  "id": "cube-blitz",
+  "type": "cube",
+  "categories": [
+    "cube_too_good",
+    "blitz"
+  ],
+  "description": "Attaque forte, videau centré, partie libre sans règle Jacoby.",
+  "position_id": "4Dn4AGiynYMHAA",
+  "match_id": "cAkAAAAAAAAE",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": false,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8259491,
+          "win_gammon": 0.63558626,
+          "win_backgammon": 0.051824015,
+          "lose_gammon": 0.01410268,
+          "lose_backgammon": 0.00029838496
+        },
+        "equity": 1.3249073
+      },
+      "cube": {
+        "no_double": 1.4283034,
+        "double_take": 2.5175364,
+        "double_pass": 1.0,
+        "optimal": 1.4283034,
+        "decision": "TOOGOOD_PASS",
+        "decision_text": "Too good to double, pass"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.81745076,
+          "win_gammon": 0.6255606,
+          "win_backgammon": 0.04636141,
+          "lose_gammon": 0.01678618,
+          "lose_backgammon": 0.0004376368
+        },
+        "equity": 1.2895997
+      },
+      "cube": {
+        "no_double": 1.3982979,
+        "double_take": 2.4550662,
+        "double_pass": 1.0,
+        "optimal": 1.3982979,
+        "decision": "TOOGOOD_PASS",
+        "decision_text": "Too good to double, pass"
+      }
+    }
+  }
+}

tests/reference/results/cube-double-pass.json

@@ -0,0 +1,66 @@
+{
+  "id": "cube-double-pass",
+  "type": "cube",
+  "categories": [
+    "cube_double_pass",
+    "race"
+  ],
+  "description": "Course avec grosse avance, videau centré : double, passe.",
+  "position_id": "cHd3AADvvQMAAA",
+  "match_id": "cAkAAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.9999498,
+          "win_gammon": 0.028405396,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0,
+          "lose_backgammon": 0.0
+        },
+        "equity": 1.028305
+      },
+      "cube": {
+        "no_double": 0.9999689,
+        "double_take": 2.0565755,
+        "double_pass": 1.0,
+        "optimal": 1.0,
+        "decision": "DOUBLE_PASS",
+        "decision_text": "Double, pass"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.99994457,
+          "win_gammon": 0.03390939,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0,
+          "lose_backgammon": 0.0
+        },
+        "equity": 1.0337985
+      },
+      "cube": {
+        "no_double": 1.0,
+        "double_take": 2.0675642,
+        "double_pass": 1.0,
+        "optimal": 1.0,
+        "decision": "DOUBLE_PASS",
+        "decision_text": "Double, pass"
+      }
+    }
+  }
+}

tests/reference/results/cube-double-take.json

@@ -0,0 +1,66 @@
+{
+  "id": "cube-double-take",
+  "type": "cube",
+  "categories": [
+    "cube_double_take",
+    "race"
+  ],
+  "description": "Course avec avance modérée, videau centré : double, prend.",
+  "position_id": "6O5uAAC4uzsAAA",
+  "match_id": "cAkAAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.7670521,
+          "win_gammon": 5.0172162e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 5.0172162e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.5341042
+      },
+      "cube": {
+        "no_double": 0.8189599,
+        "double_take": 0.88185024,
+        "double_pass": 1.0,
+        "optimal": 0.88185024,
+        "decision": "DOUBLE_TAKE",
+        "decision_text": "Double, take"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.7683121,
+          "win_gammon": 5.017216e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 4.5526584e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.53662884
+      },
+      "cube": {
+        "no_double": 0.83056116,
+        "double_take": 0.9218164,
+        "double_pass": 1.0,
+        "optimal": 0.9218164,
+        "decision": "DOUBLE_TAKE",
+        "decision_text": "Double, take"
+      }
+    }
+  }
+}

tests/reference/results/cube-no-double.json

@@ -0,0 +1,65 @@
+{
+  "id": "cube-no-double",
+  "type": "cube",
+  "categories": [
+    "cube_no_double"
+  ],
+  "description": "Position presque égale, videau centré : pas de double.",
+  "position_id": "2J0dBgDYnRsGAA",
+  "match_id": "cAkAAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.6188814,
+          "win_gammon": 0.0024997902,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0023386418,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.23792398
+      },
+      "cube": {
+        "no_double": 0.35839266,
+        "double_take": 0.18619786,
+        "double_pass": 1.0,
+        "optimal": 0.35839266,
+        "decision": "NODOUBLE_TAKE",
+        "decision_text": "No double, take"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.5963505,
+          "win_gammon": 0.0010162055,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.000998305,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.19271892
+      },
+      "cube": {
+        "no_double": 0.28532878,
+        "double_take": 0.11171284,
+        "double_pass": 1.0,
+        "optimal": 0.28532878,
+        "decision": "NODOUBLE_TAKE",
+        "decision_text": "No double, take"
+      }
+    }
+  }
+}

tests/reference/results/cube-redouble.json

@@ -0,0 +1,66 @@
+{
+  "id": "cube-redouble",
+  "type": "cube",
+  "categories": [
+    "cube_redouble",
+    "race"
+  ],
+  "description": "Course avec avance, videau à 2 possédé par le joueur au trait : redouble.",
+  "position_id": "6O5uAAC4uzsAAA",
+  "match_id": "UQkAAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 2,
+    "cube_owner": "player"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.7670521,
+          "win_gammon": 5.0172162e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 5.0172162e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.5341042
+      },
+      "cube": {
+        "no_double": 0.840925,
+        "double_take": 0.88185024,
+        "double_pass": 1.0,
+        "optimal": 0.88185024,
+        "decision": "REDOUBLE_TAKE",
+        "decision_text": "Redouble, take"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.7683121,
+          "win_gammon": 5.017216e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 4.5526584e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.53662884
+      },
+      "cube": {
+        "no_double": 0.84627455,
+        "double_take": 0.9218164,
+        "double_pass": 1.0,
+        "optimal": 0.9218164,
+        "decision": "REDOUBLE_TAKE",
+        "decision_text": "Redouble, take"
+      }
+    }
+  }
+}

tests/reference/results/forced-move.json

@@ -0,0 +1,90 @@
+{
+  "id": "forced-move",
+  "type": "move",
+  "categories": [
+    "edge_case"
+  ],
+  "description": "Deux dames sur la barre, un seul point d'entrée : coup forcé avec 3-1.",
+  "position_id": "tm3ABwBw5+ABYA",
+  "match_id": "cIkFAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      3,
+      1
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.08933239,
+          "win_gammon": 0.008590468,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.73243725,
+          "lose_backgammon": 0.007992154
+        },
+        "equity": -1.5531741
+      },
+      "moves": {
+        "legal_move_count": 1,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "bar/24",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.1284166,
+              "win_gammon": 0.014085609,
+              "win_backgammon": 0.00014807966,
+              "lose_gammon": 0.59697056,
+              "lose_backgammon": 0.015525891
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.09428096,
+          "win_gammon": 0.008408972,
+          "win_backgammon": 2.419169e-05,
+          "lose_gammon": 0.7226846,
+          "lose_backgammon": 0.013129193
+        },
+        "equity": -1.5388187
+      },
+      "moves": {
+        "legal_move_count": 1,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "bar/24",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.1284166,
+              "win_gammon": 0.014085609,
+              "win_backgammon": 0.00014807966,
+              "lose_gammon": 0.59697056,
+              "lose_backgammon": 0.015525891
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/jacoby-cube.json

@@ -0,0 +1,66 @@
+{
+  "id": "jacoby-cube",
+  "type": "cube",
+  "categories": [
+    "jacoby",
+    "blitz"
+  ],
+  "description": "Même attaque que cube-blitz, avec la règle Jacoby.",
+  "position_id": "4Dn4AGiynYMHAA",
+  "match_id": "cAkAAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8259491,
+          "win_gammon": 0.63558626,
+          "win_backgammon": 0.051824015,
+          "lose_gammon": 0.01410268,
+          "lose_backgammon": 0.00029838496
+        },
+        "equity": 1.3249073
+      },
+      "cube": {
+        "no_double": 0.91645557,
+        "double_take": 2.5175364,
+        "double_pass": 1.0,
+        "optimal": 1.0,
+        "decision": "DOUBLE_PASS",
+        "decision_text": "Double, pass"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8177575,
+          "win_gammon": 0.6248996,
+          "win_backgammon": 0.04603396,
+          "lose_gammon": 0.016648903,
+          "lose_backgammon": 0.0004305263
+        },
+        "equity": 1.2893691
+      },
+      "cube": {
+        "no_double": 0.99924153,
+        "double_take": 2.4548137,
+        "double_pass": 1.0,
+        "optimal": 1.0,
+        "decision": "DOUBLE_PASS",
+        "decision_text": "Double, pass"
+      }
+    }
+  }
+}

tests/reference/results/jacoby-move.json

@@ -0,0 +1,343 @@
+{
+  "id": "jacoby-move",
+  "type": "move",
+  "categories": [
+    "jacoby",
+    "blitz"
+  ],
+  "description": "Attaque avec la règle Jacoby, 6-4 à jouer.",
+  "position_id": "4HPwAVC0XYMHAA",
+  "match_id": "cAkTAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      4
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8636842,
+          "win_gammon": 0.57455575,
+          "win_backgammon": 0.017836282,
+          "lose_gammon": 0.015630726,
+          "lose_backgammon": 0.00039723353
+        },
+        "equity": 1.3037324
+      },
+      "moves": {
+        "legal_move_count": 14,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/3",
+            "ply": 0,
+            "equity": 0.9328213,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.8600443,
+              "win_gammon": 0.53404087,
+              "win_backgammon": 0.019512838,
+              "lose_gammon": 0.0137145845,
+              "lose_backgammon": 0.0001231146
+            }
+          },
+          {
+            "rank": 2,
+            "move": "13/9 13/7",
+            "ply": 0,
+            "equity": 0.9175232,
+            "equity_diff": -0.0152980685,
+            "probabilities": {
+              "win": 0.82817334,
+              "win_gammon": 0.44573566,
+              "win_backgammon": 0.019687971,
+              "lose_gammon": 0.022985052,
+              "lose_backgammon": 0.00049623987
+            }
+          },
+          {
+            "rank": 3,
+            "move": "8/2 7/3",
+            "ply": 0,
+            "equity": 0.91263336,
+            "equity_diff": -0.020187914,
+            "probabilities": {
+              "win": 0.8179862,
+              "win_gammon": 0.5121088,
+              "win_backgammon": 0.021086743,
+              "lose_gammon": 0.02465748,
+              "lose_backgammon": 0.00034594204
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/7 8/4",
+            "ply": 0,
+            "equity": 0.90736973,
+            "equity_diff": -0.025451541,
+            "probabilities": {
+              "win": 0.8070203,
+              "win_gammon": 0.4591856,
+              "win_backgammon": 0.022148455,
+              "lose_gammon": 0.029529065,
+              "lose_backgammon": 0.000659062
+            }
+          },
+          {
+            "rank": 5,
+            "move": "13/9 7/1*",
+            "ply": 0,
+            "equity": 0.9053596,
+            "equity_diff": -0.027461648,
+            "probabilities": {
+              "win": 0.8028326,
+              "win_gammon": 0.55443704,
+              "win_backgammon": 0.02020569,
+              "lose_gammon": 0.030723047,
+              "lose_backgammon": 0.0007949887
+            }
+          },
+          {
+            "rank": 6,
+            "move": "8/2 6/2",
+            "ply": 0,
+            "equity": 0.9017469,
+            "equity_diff": -0.031074345,
+            "probabilities": {
+              "win": 0.7953061,
+              "win_gammon": 0.49147764,
+              "win_backgammon": 0.020525223,
+              "lose_gammon": 0.033936173,
+              "lose_backgammon": 0.0006972058
+            }
+          },
+          {
+            "rank": 7,
+            "move": "8/4 7/1*",
+            "ply": 0,
+            "equity": 0.89993495,
+            "equity_diff": -0.032886326,
+            "probabilities": {
+              "win": 0.79153115,
+              "win_gammon": 0.54988307,
+              "win_backgammon": 0.01679322,
+              "lose_gammon": 0.036662817,
+              "lose_backgammon": 0.0010210252
+            }
+          },
+          {
+            "rank": 8,
+            "move": "13/7 6/2",
+            "ply": 0,
+            "equity": 0.8962312,
+            "equity_diff": -0.0365901,
+            "probabilities": {
+              "win": 0.7838149,
+              "win_gammon": 0.40296447,
+              "win_backgammon": 0.018670566,
+              "lose_gammon": 0.032934573,
+              "lose_backgammon": 0.00076343544
+            }
+          },
+          {
+            "rank": 9,
+            "move": "7/1* 5/1",
+            "ply": 0,
+            "equity": 0.8907822,
+            "equity_diff": -0.042039096,
+            "probabilities": {
+              "win": 0.77246284,
+              "win_gammon": 0.51146686,
+              "win_backgammon": 0.012117631,
+              "lose_gammon": 0.042058453,
+              "lose_backgammon": 0.0011496529
+            }
+          },
+          {
+            "rank": 10,
+            "move": "7/1* 6/2",
+            "ply": 0,
+            "equity": 0.87481093,
+            "equity_diff": -0.05801034,
+            "probabilities": {
+              "win": 0.7391895,
+              "win_gammon": 0.4693772,
+              "win_backgammon": 0.012886849,
+              "lose_gammon": 0.049103227,
+              "lose_backgammon": 0.0012413587
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8528266,
+          "win_gammon": 0.5386192,
+          "win_backgammon": 0.014262153,
+          "lose_gammon": 0.013019987,
+          "lose_backgammon": 0.00017201946
+        },
+        "equity": 1.2453425
+      },
+      "moves": {
+        "legal_move_count": 14,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/3",
+            "ply": 2,
+            "equity": 1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.8550246,
+              "win_gammon": 0.5007356,
+              "win_backgammon": 0.016448246,
+              "lose_gammon": 0.012576544,
+              "lose_backgammon": 0.00010470922
+            }
+          },
+          {
+            "rank": 2,
+            "move": "13/9 13/7",
+            "ply": 2,
+            "equity": 0.99894416,
+            "equity_diff": -0.0010558367,
+            "probabilities": {
+              "win": 0.8247142,
+              "win_gammon": 0.40604338,
+              "win_backgammon": 0.013385465,
+              "lose_gammon": 0.020446587,
+              "lose_backgammon": 0.00043890413
+            }
+          },
+          {
+            "rank": 3,
+            "move": "8/2 7/3",
+            "ply": 2,
+            "equity": 0.99641544,
+            "equity_diff": -0.0035845637,
+            "probabilities": {
+              "win": 0.8178655,
+              "win_gammon": 0.47170973,
+              "win_backgammon": 0.016897058,
+              "lose_gammon": 0.023946658,
+              "lose_backgammon": 0.00037891598
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/7 8/4",
+            "ply": 2,
+            "equity": 0.98718643,
+            "equity_diff": -0.012813568,
+            "probabilities": {
+              "win": 0.80567765,
+              "win_gammon": 0.40185097,
+              "win_backgammon": 0.014731062,
+              "lose_gammon": 0.025103796,
+              "lose_backgammon": 0.0005290065
+            }
+          },
+          {
+            "rank": 5,
+            "move": "13/7 6/2",
+            "ply": 2,
+            "equity": 0.9808178,
+            "equity_diff": -0.019182205,
+            "probabilities": {
+              "win": 0.7764652,
+              "win_gammon": 0.3628158,
+              "win_backgammon": 0.013918926,
+              "lose_gammon": 0.035407502,
+              "lose_backgammon": 0.0009081904
+            }
+          },
+          {
+            "rank": 6,
+            "move": "13/9 7/1*",
+            "ply": 2,
+            "equity": 0.9452111,
+            "equity_diff": -0.054788888,
+            "probabilities": {
+              "win": 0.7960049,
+              "win_gammon": 0.5129587,
+              "win_backgammon": 0.014989997,
+              "lose_gammon": 0.031934794,
+              "lose_backgammon": 0.00082239707
+            }
+          },
+          {
+            "rank": 7,
+            "move": "8/4 7/1*",
+            "ply": 1,
+            "equity": 0.93114305,
+            "equity_diff": -0.068856955,
+            "probabilities": {
+              "win": 0.77886486,
+              "win_gammon": 0.50991887,
+              "win_backgammon": 0.014553436,
+              "lose_gammon": 0.04128269,
+              "lose_backgammon": 0.0014581447
+            }
+          },
+          {
+            "rank": 8,
+            "move": "7/1* 5/1",
+            "ply": 1,
+            "equity": 0.91711015,
+            "equity_diff": -0.082889855,
+            "probabilities": {
+              "win": 0.76492023,
+              "win_gammon": 0.48983887,
+              "win_backgammon": 0.010236203,
+              "lose_gammon": 0.044365447,
+              "lose_backgammon": 0.001417413
+            }
+          },
+          {
+            "rank": 9,
+            "move": "8/2 6/2",
+            "ply": 1,
+            "equity": 0.9160911,
+            "equity_diff": -0.083908916,
+            "probabilities": {
+              "win": 0.7832458,
+              "win_gammon": 0.46207324,
+              "win_backgammon": 0.01472875,
+              "lose_gammon": 0.034901537,
+              "lose_backgammon": 0.0010149138
+            }
+          },
+          {
+            "rank": 10,
+            "move": "7/1* 6/2",
+            "ply": 1,
+            "equity": 0.8391471,
+            "equity_diff": -0.16085291,
+            "probabilities": {
+              "win": 0.7302311,
+              "win_gammon": 0.43027958,
+              "win_backgammon": 0.013705867,
+              "lose_gammon": 0.056136616,
+              "lose_backgammon": 0.0021741493
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/match-3-3-move.json

@@ -0,0 +1,343 @@
+{
+  "id": "match-3-3-move",
+  "type": "move",
+  "categories": [
+    "match",
+    "middlegame"
+  ],
+  "description": "Match en 5 points, 2-2 (3-away 3-away), 5-3 à jouer.",
+  "position_id": "xGfhATDQ2+BBIA",
+  "match_id": "cImuACAAEAAE",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      5,
+      3
+    ],
+    "match_length": 5,
+    "score_player": 2,
+    "score_opponent": 2,
+    "crawford": false,
+    "jacoby": false,
+    "beavers": false,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.6530462,
+          "win_gammon": 0.20978287,
+          "win_backgammon": 0.017546972,
+          "lose_gammon": 0.087096915,
+          "lose_backgammon": 0.00383374
+        },
+        "equity": 0.5270539
+      },
+      "moves": {
+        "legal_move_count": 28,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/5",
+            "ply": 0,
+            "equity": 0.7553502,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.66454446,
+              "win_gammon": 0.21222445,
+              "win_backgammon": 0.016986715,
+              "lose_gammon": 0.090078115,
+              "lose_backgammon": 0.0030091396
+            }
+          },
+          {
+            "rank": 2,
+            "move": "18/13 8/5",
+            "ply": 0,
+            "equity": 0.5814649,
+            "equity_diff": -0.17388529,
+            "probabilities": {
+              "win": 0.62935334,
+              "win_gammon": 0.1873452,
+              "win_backgammon": 0.011812735,
+              "lose_gammon": 0.09861754,
+              "lose_backgammon": 0.0028636002
+            }
+          },
+          {
+            "rank": 3,
+            "move": "24/16*",
+            "ply": 0,
+            "equity": 0.4581785,
+            "equity_diff": -0.29717168,
+            "probabilities": {
+              "win": 0.60689855,
+              "win_gammon": 0.16452998,
+              "win_backgammon": 0.012356104,
+              "lose_gammon": 0.10971227,
+              "lose_backgammon": 0.0061068437
+            }
+          },
+          {
+            "rank": 4,
+            "move": "18/10",
+            "ply": 0,
+            "equity": 0.31719947,
+            "equity_diff": -0.4381507,
+            "probabilities": {
+              "win": 0.5757375,
+              "win_gammon": 0.16255254,
+              "win_backgammon": 0.010020595,
+              "lose_gammon": 0.13299894,
+              "lose_backgammon": 0.0068476396
+            }
+          },
+          {
+            "rank": 5,
+            "move": "8/5 8/3",
+            "ply": 0,
+            "equity": 0.31371918,
+            "equity_diff": -0.441631,
+            "probabilities": {
+              "win": 0.5670167,
+              "win_gammon": 0.18751182,
+              "win_backgammon": 0.015656954,
+              "lose_gammon": 0.13847484,
+              "lose_backgammon": 0.006125221
+            }
+          },
+          {
+            "rank": 6,
+            "move": "18/15 13/8",
+            "ply": 0,
+            "equity": 0.26037523,
+            "equity_diff": -0.49497494,
+            "probabilities": {
+              "win": 0.56361103,
+              "win_gammon": 0.16078936,
+              "win_backgammon": 0.010516407,
+              "lose_gammon": 0.14256367,
+              "lose_backgammon": 0.007627656
+            }
+          },
+          {
+            "rank": 7,
+            "move": "24/21 18/13",
+            "ply": 0,
+            "equity": 0.23547156,
+            "equity_diff": -0.5198786,
+            "probabilities": {
+              "win": 0.55978787,
+              "win_gammon": 0.1405232,
+              "win_backgammon": 0.0066346275,
+              "lose_gammon": 0.12748064,
+              "lose_backgammon": 0.004688547
+            }
+          },
+          {
+            "rank": 8,
+            "move": "8/3 6/3",
+            "ply": 0,
+            "equity": 0.15432969,
+            "equity_diff": -0.60102046,
+            "probabilities": {
+              "win": 0.5375695,
+              "win_gammon": 0.17747077,
+              "win_backgammon": 0.015221183,
+              "lose_gammon": 0.17106332,
+              "lose_backgammon": 0.010604714
+            }
+          },
+          {
+            "rank": 9,
+            "move": "13/10 13/8",
+            "ply": 0,
+            "equity": 0.13837479,
+            "equity_diff": -0.61697537,
+            "probabilities": {
+              "win": 0.538627,
+              "win_gammon": 0.16475716,
+              "win_backgammon": 0.012404756,
+              "lose_gammon": 0.17291316,
+              "lose_backgammon": 0.013045842
+            }
+          },
+          {
+            "rank": 10,
+            "move": "18/13 5/2",
+            "ply": 0,
+            "equity": 0.12815686,
+            "equity_diff": -0.62719333,
+            "probabilities": {
+              "win": 0.53481126,
+              "win_gammon": 0.14154978,
+              "win_backgammon": 0.0069042817,
+              "lose_gammon": 0.14363572,
+              "lose_backgammon": 0.004923693
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.65946376,
+          "win_gammon": 0.20922449,
+          "win_backgammon": 0.015489625,
+          "lose_gammon": 0.08499662,
+          "lose_backgammon": 0.0031080623
+        },
+        "equity": 0.5388975
+      },
+      "moves": {
+        "legal_move_count": 28,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/5",
+            "ply": 1,
+            "equity": 0.85158825,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.669464,
+              "win_gammon": 0.21261428,
+              "win_backgammon": 0.014087503,
+              "lose_gammon": 0.092310324,
+              "lose_backgammon": 0.0036420587
+            }
+          },
+          {
+            "rank": 2,
+            "move": "18/13 8/5",
+            "ply": 1,
+            "equity": 0.6511238,
+            "equity_diff": -0.20046443,
+            "probabilities": {
+              "win": 0.63700217,
+              "win_gammon": 0.19559763,
+              "win_backgammon": 0.010781131,
+              "lose_gammon": 0.09663812,
+              "lose_backgammon": 0.0033870263
+            }
+          },
+          {
+            "rank": 3,
+            "move": "24/16*",
+            "ply": 0,
+            "equity": 0.44287914,
+            "equity_diff": -0.4087091,
+            "probabilities": {
+              "win": 0.60689855,
+              "win_gammon": 0.16452998,
+              "win_backgammon": 0.012356104,
+              "lose_gammon": 0.10971227,
+              "lose_backgammon": 0.0061068437
+            }
+          },
+          {
+            "rank": 4,
+            "move": "18/10",
+            "ply": 0,
+            "equity": 0.3053229,
+            "equity_diff": -0.54626536,
+            "probabilities": {
+              "win": 0.5757375,
+              "win_gammon": 0.16255254,
+              "win_backgammon": 0.010020595,
+              "lose_gammon": 0.13299894,
+              "lose_backgammon": 0.0068476396
+            }
+          },
+          {
+            "rank": 5,
+            "move": "8/5 8/3",
+            "ply": 0,
+            "equity": 0.3051695,
+            "equity_diff": -0.5464188,
+            "probabilities": {
+              "win": 0.5670167,
+              "win_gammon": 0.18751182,
+              "win_backgammon": 0.015656954,
+              "lose_gammon": 0.13847484,
+              "lose_backgammon": 0.006125221
+            }
+          },
+          {
+            "rank": 6,
+            "move": "18/15 13/8",
+            "ply": 0,
+            "equity": 0.25003925,
+            "equity_diff": -0.601549,
+            "probabilities": {
+              "win": 0.56361103,
+              "win_gammon": 0.16078936,
+              "win_backgammon": 0.010516407,
+              "lose_gammon": 0.14256367,
+              "lose_backgammon": 0.007627656
+            }
+          },
+          {
+            "rank": 7,
+            "move": "24/21 18/13",
+            "ply": 0,
+            "equity": 0.22587322,
+            "equity_diff": -0.625715,
+            "probabilities": {
+              "win": 0.55978787,
+              "win_gammon": 0.1405232,
+              "win_backgammon": 0.0066346275,
+              "lose_gammon": 0.12748064,
+              "lose_backgammon": 0.004688547
+            }
+          },
+          {
+            "rank": 8,
+            "move": "8/3 6/3",
+            "ply": 0,
+            "equity": 0.14823739,
+            "equity_diff": -0.70335084,
+            "probabilities": {
+              "win": 0.5375695,
+              "win_gammon": 0.17747077,
+              "win_backgammon": 0.015221183,
+              "lose_gammon": 0.17106332,
+              "lose_backgammon": 0.010604714
+            }
+          },
+          {
+            "rank": 9,
+            "move": "13/10 13/8",
+            "ply": 0,
+            "equity": 0.13046566,
+            "equity_diff": -0.7211226,
+            "probabilities": {
+              "win": 0.538627,
+              "win_gammon": 0.16475716,
+              "win_backgammon": 0.012404756,
+              "lose_gammon": 0.17291316,
+              "lose_backgammon": 0.013045842
+            }
+          },
+          {
+            "rank": 10,
+            "move": "18/13 5/2",
+            "ply": 0,
+            "equity": 0.12218381,
+            "equity_diff": -0.72940445,
+            "probabilities": {
+              "win": 0.53481126,
+              "win_gammon": 0.14154978,
+              "win_backgammon": 0.0069042817,
+              "lose_gammon": 0.14363572,
+              "lose_backgammon": 0.004923693
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/match-7-cube.json

@@ -0,0 +1,66 @@
+{
+  "id": "match-7-cube",
+  "type": "cube",
+  "categories": [
+    "match",
+    "race"
+  ],
+  "description": "Match en 7 points, joueur au trait à 3, adversaire à 5 : décision de videau.",
+  "position_id": "cHd3AAC4uzsAAA",
+  "match_id": "cAngAFAAGAAE",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 7,
+    "score_player": 3,
+    "score_opponent": 5,
+    "crawford": false,
+    "jacoby": false,
+    "beavers": false,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8364941,
+          "win_gammon": 5.0172162e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 5.0172162e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.67294794
+      },
+      "cube": {
+        "no_double": 0.93459773,
+        "double_take": 1.1651278,
+        "double_pass": 1.0,
+        "optimal": 1.0,
+        "decision": "DOUBLE_PASS",
+        "decision_text": "Double, pass"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8366328,
+          "win_gammon": 5.027103e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 4.657184e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.67323166
+      },
+      "cube": {
+        "no_double": 0.9405141,
+        "double_take": 1.1657741,
+        "double_pass": 1.0,
+        "optimal": 1.0,
+        "decision": "DOUBLE_PASS",
+        "decision_text": "Double, pass"
+      }
+    }
+  }
+}

tests/reference/results/match-crawford-cube.json

@@ -0,0 +1,67 @@
+{
+  "id": "match-crawford-cube",
+  "type": "cube",
+  "categories": [
+    "match",
+    "crawford",
+    "race"
+  ],
+  "description": "Match en 5 points, partie Crawford : videau mort.",
+  "position_id": "cHd3AAC4uzsAAA",
+  "match_id": "8AmgAEAAEAAE",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 5,
+    "score_player": 2,
+    "score_opponent": 4,
+    "crawford": true,
+    "jacoby": false,
+    "beavers": false,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8364941,
+          "win_gammon": 5.0172162e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 5.0172162e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.6729906
+      },
+      "cube": {
+        "no_double": 0.67299056,
+        "double_take": 0.71412474,
+        "double_pass": 1.0,
+        "optimal": 0.67299056,
+        "decision": "NODOUBLE_DEADCUBE",
+        "decision_text": "Never double, take (dead cube)"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8366328,
+          "win_gammon": 5.027103e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 4.657184e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.673268
+      },
+      "cube": {
+        "no_double": 0.673268,
+        "double_take": 0.7144093,
+        "double_pass": 1.0,
+        "optimal": 0.673268,
+        "decision": "NODOUBLE_DEADCUBE",
+        "decision_text": "Never double, take (dead cube)"
+      }
+    }
+  }
+}

tests/reference/results/match-crawford-move.json

@@ -0,0 +1,344 @@
+{
+  "id": "match-crawford-move",
+  "type": "move",
+  "categories": [
+    "match",
+    "crawford",
+    "blitz"
+  ],
+  "description": "Match en 5 points, partie Crawford, joueur au trait mené 2-4, 4-3 à jouer.",
+  "position_id": "4Dn4AGiynYMHAA",
+  "match_id": "8AmuAEAAEAAE",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      4,
+      3
+    ],
+    "match_length": 5,
+    "score_player": 2,
+    "score_opponent": 4,
+    "crawford": true,
+    "jacoby": false,
+    "beavers": false,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
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+          "lose_backgammon": 0.00029838496
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+        "equity": 0.7892668
+      },
+      "moves": {
+        "legal_move_count": 20,
+        "ranking": [
+          {
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+            "move": "8/5 6/2",
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+            "equity_diff": 0.0,
+            "probabilities": {
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+              "lose_backgammon": 0.000108429565
+            }
+          },
+          {
+            "rank": 2,
+            "move": "5/2 5/1*",
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+            "equity": 0.7229391,
+            "equity_diff": -0.011621237,
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+              "lose_gammon": 0.030515661,
+              "lose_backgammon": 0.0003538893
+            }
+          },
+          {
+            "rank": 3,
+            "move": "8/1*",
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+            "equity": 0.71705425,
+            "equity_diff": -0.017506063,
+            "probabilities": {
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+              "win_gammon": 0.60838807,
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+              "lose_gammon": 0.031395618,
+              "lose_backgammon": 0.0006257314
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/10 6/2",
+            "ply": 0,
+            "equity": 0.7142835,
+            "equity_diff": -0.020276785,
+            "probabilities": {
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+              "lose_gammon": 0.013131926,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 5,
+            "move": "13/9 8/5",
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+            "equity": 0.6963019,
+            "equity_diff": -0.038258433,
+            "probabilities": {
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+              "lose_backgammon": 0.00045250903
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+          },
+          {
+            "rank": 6,
+            "move": "8/5 8/4",
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+            "equity": 0.68610644,
+            "equity_diff": -0.048453867,
+            "probabilities": {
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+              "win_gammon": 0.58423555,
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+              "lose_gammon": 0.029746175,
+              "lose_backgammon": 0.0005981548
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+          },
+          {
+            "rank": 7,
+            "move": "13/10 8/4",
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+            "equity": 0.6855368,
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+            "probabilities": {
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+              "lose_backgammon": 0.0005106817
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+          },
+          {
+            "rank": 8,
+            "move": "13/10 13/9",
+            "ply": 0,
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+            "equity_diff": -0.0526914,
+            "probabilities": {
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+              "lose_backgammon": 0.00049680925
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+          },
+          {
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+            "move": "13/6",
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+            "equity": 0.6633271,
+            "equity_diff": -0.07123321,
+            "probabilities": {
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+              "win_gammon": 0.5431621,
+              "win_backgammon": 0.044880137,
+              "lose_gammon": 0.02577741,
+              "lose_backgammon": 0.00032665874
+            }
+          },
+          {
+            "rank": 10,
+            "move": "13/9 5/2",
+            "ply": 0,
+            "equity": 0.6538005,
+            "equity_diff": -0.08075982,
+            "probabilities": {
+              "win": 0.76966786,
+              "win_gammon": 0.51801664,
+              "win_backgammon": 0.043460887,
+              "lose_gammon": 0.03147457,
+              "lose_backgammon": 0.00063006644
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.81746006,
+          "win_gammon": 0.6232498,
+          "win_backgammon": 0.045707952,
+          "lose_gammon": 0.016541855,
+          "lose_backgammon": 0.0004265261
+        },
+        "equity": 0.7591515
+      },
+      "moves": {
+        "legal_move_count": 20,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "8/5 6/2",
+            "ply": 2,
+            "equity": 0.7697691,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.8151505,
+              "win_gammon": 0.6159326,
+              "win_backgammon": 0.05331921,
+              "lose_gammon": 0.016513932,
+              "lose_backgammon": 0.00013073174
+            }
+          },
+          {
+            "rank": 2,
+            "move": "13/10 6/2",
+            "ply": 2,
+            "equity": 0.7615671,
+            "equity_diff": -0.008201957,
+            "probabilities": {
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+              "win_gammon": 0.60370916,
+              "win_backgammon": 0.05414961,
+              "lose_gammon": 0.016250646,
+              "lose_backgammon": 0.00012455582
+            }
+          },
+          {
+            "rank": 3,
+            "move": "13/9 8/5",
+            "ply": 2,
+            "equity": 0.69608325,
+            "equity_diff": -0.073685825,
+            "probabilities": {
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+              "win_gammon": 0.5415461,
+              "win_backgammon": 0.05167027,
+              "lose_gammon": 0.026144765,
+              "lose_backgammon": 0.00052017724
+            }
+          },
+          {
+            "rank": 4,
+            "move": "5/2 5/1*",
+            "ply": 2,
+            "equity": 0.6911188,
+            "equity_diff": -0.078650296,
+            "probabilities": {
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+              "win_gammon": 0.57561195,
+              "win_backgammon": 0.033474863,
+              "lose_gammon": 0.03052109,
+              "lose_backgammon": 0.00048315027
+            }
+          },
+          {
+            "rank": 5,
+            "move": "8/1*",
+            "ply": 2,
+            "equity": 0.6836242,
+            "equity_diff": -0.086144865,
+            "probabilities": {
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+              "win_gammon": 0.56465274,
+              "win_backgammon": 0.03754451,
+              "lose_gammon": 0.029520204,
+              "lose_backgammon": 0.0006143754
+            }
+          },
+          {
+            "rank": 6,
+            "move": "13/10 13/9",
+            "ply": 2,
+            "equity": 0.6807338,
+            "equity_diff": -0.08903527,
+            "probabilities": {
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+              "win_gammon": 0.52131236,
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+              "lose_gammon": 0.027210515,
+              "lose_backgammon": 0.00059423654
+            }
+          },
+          {
+            "rank": 7,
+            "move": "13/10 8/4",
+            "ply": 1,
+            "equity": 0.6733323,
+            "equity_diff": -0.0964368,
+            "probabilities": {
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+              "win_gammon": 0.5298661,
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+              "lose_gammon": 0.02483147,
+              "lose_backgammon": 0.0007027216
+            }
+          },
+          {
+            "rank": 8,
+            "move": "13/6",
+            "ply": 1,
+            "equity": 0.66055346,
+            "equity_diff": -0.10921562,
+            "probabilities": {
+              "win": 0.7712825,
+              "win_gammon": 0.51356965,
+              "win_backgammon": 0.045286898,
+              "lose_gammon": 0.02338571,
+              "lose_backgammon": 0.0005819568
+            }
+          },
+          {
+            "rank": 9,
+            "move": "8/5 8/4",
+            "ply": 1,
+            "equity": 0.6556259,
+            "equity_diff": -0.11414319,
+            "probabilities": {
+              "win": 0.76584995,
+              "win_gammon": 0.5323152,
+              "win_backgammon": 0.047735877,
+              "lose_gammon": 0.027560795,
+              "lose_backgammon": 0.00079957
+            }
+          },
+          {
+            "rank": 10,
+            "move": "13/9 5/2",
+            "ply": 1,
+            "equity": 0.645951,
+            "equity_diff": -0.1238181,
+            "probabilities": {
+              "win": 0.7659519,
+              "win_gammon": 0.5108896,
+              "win_backgammon": 0.04342779,
+              "lose_gammon": 0.027958687,
+              "lose_backgammon": 0.0009177093
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/match-dmp-move.json

@@ -0,0 +1,259 @@
+{
+  "id": "match-dmp-move",
+  "type": "move",
+  "categories": [
+    "match",
+    "middlegame"
+  ],
+  "description": "Match en 1 point (double match point), 6-2 à jouer.",
+  "position_id": "mLfBARg4z8EBAw",
+  "match_id": "cAkrAAAAAAAE",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      2
+    ],
+    "match_length": 1,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": false,
+    "beavers": false,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
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+          "win_gammon": 0.13004506,
+          "win_backgammon": 0.0035395431,
+          "lose_gammon": 0.07308542,
+          "lose_backgammon": 0.0012678864
+        },
+        "equity": 0.20195127
+      },
+      "moves": {
+        "legal_move_count": 7,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/5",
+            "ply": 0,
+            "equity": 0.1492995,
+            "equity_diff": 0.0,
+            "probabilities": {
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+              "win_gammon": 0.14591993,
+              "win_backgammon": 0.0044575627,
+              "lose_gammon": 0.07497838,
+              "lose_backgammon": 0.0020658365
+            }
+          },
+          {
+            "rank": 2,
+            "move": "13/7 8/6",
+            "ply": 0,
+            "equity": 0.06906557,
+            "equity_diff": -0.08023393,
+            "probabilities": {
+              "win": 0.5345328,
+              "win_gammon": 0.12869689,
+              "win_backgammon": 0.0036363003,
+              "lose_gammon": 0.07950802,
+              "lose_backgammon": 0.002174801
+            }
+          },
+          {
+            "rank": 3,
+            "move": "13/7 6/4",
+            "ply": 0,
+            "equity": 0.061560392,
+            "equity_diff": -0.08773911,
+            "probabilities": {
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+              "win_gammon": 0.12388368,
+              "win_backgammon": 0.0037799568,
+              "lose_gammon": 0.08228647,
+              "lose_backgammon": 0.0023005977
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/11 13/7",
+            "ply": 0,
+            "equity": -0.028690457,
+            "equity_diff": -0.17798996,
+            "probabilities": {
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+              "win_gammon": 0.11687806,
+              "win_backgammon": 0.0038713207,
+              "lose_gammon": 0.11405854,
+              "lose_backgammon": 0.0063031144
+            }
+          },
+          {
+            "rank": 5,
+            "move": "20/14 13/11",
+            "ply": 0,
+            "equity": -0.043359756,
+            "equity_diff": -0.19265926,
+            "probabilities": {
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+              "win_gammon": 0.123516336,
+              "win_backgammon": 0.0038390688,
+              "lose_gammon": 0.20525116,
+              "lose_backgammon": 0.010964307
+            }
+          },
+          {
+            "rank": 6,
+            "move": "20/14 8/6",
+            "ply": 0,
+            "equity": -0.050829172,
+            "equity_diff": -0.20012867,
+            "probabilities": {
+              "win": 0.4745854,
+              "win_gammon": 0.12134288,
+              "win_backgammon": 0.0035285952,
+              "lose_gammon": 0.18661681,
+              "lose_backgammon": 0.0062879953
+            }
+          },
+          {
+            "rank": 7,
+            "move": "20/14 6/4",
+            "ply": 0,
+            "equity": -0.06328738,
+            "equity_diff": -0.21258688,
+            "probabilities": {
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+              "win_gammon": 0.114787176,
+              "win_backgammon": 0.0036217375,
+              "lose_gammon": 0.18776663,
+              "lose_backgammon": 0.0066350857
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
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+          "win_gammon": 0.15751404,
+          "win_backgammon": 0.004846546,
+          "lose_gammon": 0.07291914,
+          "lose_backgammon": 0.0015511343
+        },
+        "equity": 0.19242644
+      },
+      "moves": {
+        "legal_move_count": 7,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/5",
+            "ply": 2,
+            "equity": 0.115667224,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.5578336,
+              "win_gammon": 0.16533384,
+              "win_backgammon": 0.0046707084,
+              "lose_gammon": 0.07887684,
+              "lose_backgammon": 0.0022734941
+            }
+          },
+          {
+            "rank": 2,
+            "move": "13/7 8/6",
+            "ply": 2,
+            "equity": 0.057462573,
+            "equity_diff": -0.05820465,
+            "probabilities": {
+              "win": 0.5287313,
+              "win_gammon": 0.13934752,
+              "win_backgammon": 0.0036847882,
+              "lose_gammon": 0.07971662,
+              "lose_backgammon": 0.0021666957
+            }
+          },
+          {
+            "rank": 3,
+            "move": "13/7 6/4",
+            "ply": 2,
+            "equity": 0.055473566,
+            "equity_diff": -0.060193658,
+            "probabilities": {
+              "win": 0.5277368,
+              "win_gammon": 0.13660698,
+              "win_backgammon": 0.0037778632,
+              "lose_gammon": 0.08124607,
+              "lose_backgammon": 0.0022222484
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/11 13/7",
+            "ply": 1,
+            "equity": -0.05036807,
+            "equity_diff": -0.1660353,
+            "probabilities": {
+              "win": 0.47481596,
+              "win_gammon": 0.122993626,
+              "win_backgammon": 0.004263413,
+              "lose_gammon": 0.113883115,
+              "lose_backgammon": 0.0047030724
+            }
+          },
+          {
+            "rank": 5,
+            "move": "20/14 6/4",
+            "ply": 1,
+            "equity": -0.11175752,
+            "equity_diff": -0.22742474,
+            "probabilities": {
+              "win": 0.44412124,
+              "win_gammon": 0.116199285,
+              "win_backgammon": 0.0061467383,
+              "lose_gammon": 0.19888791,
+              "lose_backgammon": 0.0072854743
+            }
+          },
+          {
+            "rank": 6,
+            "move": "20/14 13/11",
+            "ply": 1,
+            "equity": -0.11196542,
+            "equity_diff": -0.22763264,
+            "probabilities": {
+              "win": 0.4440173,
+              "win_gammon": 0.12331532,
+              "win_backgammon": 0.0065208636,
+              "lose_gammon": 0.20642313,
+              "lose_backgammon": 0.008324866
+            }
+          },
+          {
+            "rank": 7,
+            "move": "20/14 8/6",
+            "ply": 1,
+            "equity": -0.11355829,
+            "equity_diff": -0.22922552,
+            "probabilities": {
+              "win": 0.44322085,
+              "win_gammon": 0.120239764,
+              "win_backgammon": 0.006536752,
+              "lose_gammon": 0.1980509,
+              "lose_backgammon": 0.006582335
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/match-post-crawford-cube.json

@@ -0,0 +1,66 @@
+{
+  "id": "match-post-crawford-cube",
+  "type": "cube",
+  "categories": [
+    "match",
+    "post_crawford"
+  ],
+  "description": "Match en 5 points, après Crawford, joueur au trait mené 2-4 : videau.",
+  "position_id": "2J0dBgDYnRsGAA",
+  "match_id": "cAmgAEAAEAAE",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": null,
+    "match_length": 5,
+    "score_player": 2,
+    "score_opponent": 4,
+    "crawford": false,
+    "jacoby": false,
+    "beavers": false,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.6188814,
+          "win_gammon": 0.0024997902,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0023386418,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.23788543
+      },
+      "cube": {
+        "no_double": 0.26475775,
+        "double_take": 0.2732438,
+        "double_pass": 1.0,
+        "optimal": 0.2732438,
+        "decision": "DOUBLE_TAKE",
+        "decision_text": "Double, take"
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.5964545,
+          "win_gammon": 0.0009377186,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.0009169524,
+          "lose_backgammon": 0.0
+        },
+        "equity": 0.192955
+      },
+      "cube": {
+        "no_double": 0.22408937,
+        "double_take": 0.22408937,
+        "double_pass": 1.0,
+        "optimal": 0.22408937,
+        "decision": "OPTIONAL_DOUBLE_TAKE",
+        "decision_text": "Optional double, take"
+      }
+    }
+  }
+}

tests/reference/results/middlegame-1.json

@@ -0,0 +1,342 @@
+{
+  "id": "middlegame-1",
+  "type": "move",
+  "categories": [
+    "middlegame"
+  ],
+  "description": "Milieu de partie avec contact, 6-4 à jouer.",
+  "position_id": "mM/gATCw5+ABMA",
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+      }
+    }
+  }
+}

tests/reference/results/middlegame-2.json

@@ -0,0 +1,342 @@
+{
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+  "type": "move",
+  "categories": [
+    "middlegame"
+  ],
+  "description": "Milieu de partie avec contact et dames isolées, 5-3 à jouer.",
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+            "probabilities": {
+              "win": 0.53481126,
+              "win_gammon": 0.14154978,
+              "win_backgammon": 0.0069042817,
+              "lose_gammon": 0.14363572,
+              "lose_backgammon": 0.004923693
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/middlegame-holding.json

@@ -0,0 +1,258 @@
+{
+  "id": "middlegame-holding",
+  "type": "move",
+  "categories": [
+    "middlegame"
+  ],
+  "description": "Jeu de tenue (point 20 tenu), 6-2 à jouer.",
+  "position_id": "mLfBARg4z8EBAw",
+  "match_id": "cAkLAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      2
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
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+          "win_gammon": 0.13004506,
+          "win_backgammon": 0.0035395431,
+          "lose_gammon": 0.07308542,
+          "lose_backgammon": 0.0012678864
+        },
+        "equity": 0.26118255
+      },
+      "moves": {
+        "legal_move_count": 7,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/5",
+            "ply": 0,
+            "equity": 0.2992556,
+            "equity_diff": 0.0,
+            "probabilities": {
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+              "win_gammon": 0.14591993,
+              "win_backgammon": 0.0044575627,
+              "lose_gammon": 0.07497838,
+              "lose_backgammon": 0.0020658365
+            }
+          },
+          {
+            "rank": 2,
+            "move": "13/7 8/6",
+            "ply": 0,
+            "equity": 0.15538445,
+            "equity_diff": -0.14387116,
+            "probabilities": {
+              "win": 0.5345328,
+              "win_gammon": 0.12869689,
+              "win_backgammon": 0.0036363003,
+              "lose_gammon": 0.07950802,
+              "lose_backgammon": 0.002174801
+            }
+          },
+          {
+            "rank": 3,
+            "move": "13/7 6/4",
+            "ply": 0,
+            "equity": 0.13640194,
+            "equity_diff": -0.16285367,
+            "probabilities": {
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+              "win_gammon": 0.12388368,
+              "win_backgammon": 0.0037799568,
+              "lose_gammon": 0.08228647,
+              "lose_backgammon": 0.0023005977
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/11 13/7",
+            "ply": 0,
+            "equity": -0.042834148,
+            "equity_diff": -0.34208977,
+            "probabilities": {
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+              "win_gammon": 0.11687806,
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+              "lose_gammon": 0.11405854,
+              "lose_backgammon": 0.0063031144
+            }
+          },
+          {
+            "rank": 5,
+            "move": "20/14 8/6",
+            "ply": 0,
+            "equity": -0.14552313,
+            "equity_diff": -0.44477874,
+            "probabilities": {
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+              "win_gammon": 0.12134288,
+              "win_backgammon": 0.0035285952,
+              "lose_gammon": 0.18661681,
+              "lose_backgammon": 0.0062879953
+            }
+          },
+          {
+            "rank": 6,
+            "move": "20/14 13/11",
+            "ply": 0,
+            "equity": -0.15537354,
+            "equity_diff": -0.45462915,
+            "probabilities": {
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+              "win_gammon": 0.123516336,
+              "win_backgammon": 0.0038390688,
+              "lose_gammon": 0.20525116,
+              "lose_backgammon": 0.010964307
+            }
+          },
+          {
+            "rank": 7,
+            "move": "20/14 6/4",
+            "ply": 0,
+            "equity": -0.17235905,
+            "equity_diff": -0.47161466,
+            "probabilities": {
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+              "lose_gammon": 0.18776663,
+              "lose_backgammon": 0.0066350857
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
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+          "win_gammon": 0.12427109,
+          "win_backgammon": 0.0039397688,
+          "lose_gammon": 0.071554266,
+          "lose_backgammon": 0.0014250871
+        },
+        "equity": 0.25384325
+      },
+      "moves": {
+        "legal_move_count": 7,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/5",
+            "ply": 2,
+            "equity": 0.22664805,
+            "equity_diff": 0.0,
+            "probabilities": {
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+              "win_gammon": 0.13116215,
+              "win_backgammon": 0.0038719273,
+              "lose_gammon": 0.07936195,
+              "lose_backgammon": 0.0021631026
+            }
+          },
+          {
+            "rank": 2,
+            "move": "13/7 6/4",
+            "ply": 2,
+            "equity": 0.13002977,
+            "equity_diff": -0.09661828,
+            "probabilities": {
+              "win": 0.53358424,
+              "win_gammon": 0.11851678,
+              "win_backgammon": 0.0035490294,
+              "lose_gammon": 0.08071164,
+              "lose_backgammon": 0.0021506099
+            }
+          },
+          {
+            "rank": 3,
+            "move": "13/7 8/6",
+            "ply": 1,
+            "equity": 0.07910592,
+            "equity_diff": -0.14754212,
+            "probabilities": {
+              "win": 0.5163796,
+              "win_gammon": 0.12108203,
+              "win_backgammon": 0.0042679794,
+              "lose_gammon": 0.08832949,
+              "lose_backgammon": 0.00228202
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/11 13/7",
+            "ply": 0,
+            "equity": -0.041345336,
+            "equity_diff": -0.2679934,
+            "probabilities": {
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+              "win_gammon": 0.11687806,
+              "win_backgammon": 0.0038713207,
+              "lose_gammon": 0.11405854,
+              "lose_backgammon": 0.0063031144
+            }
+          },
+          {
+            "rank": 5,
+            "move": "20/14 8/6",
+            "ply": 0,
+            "equity": -0.13555534,
+            "equity_diff": -0.3622034,
+            "probabilities": {
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+              "win_gammon": 0.12134288,
+              "win_backgammon": 0.0035285952,
+              "lose_gammon": 0.18661681,
+              "lose_backgammon": 0.0062879953
+            }
+          },
+          {
+            "rank": 6,
+            "move": "20/14 13/11",
+            "ply": 0,
+            "equity": -0.14358261,
+            "equity_diff": -0.37023067,
+            "probabilities": {
+              "win": 0.47832012,
+              "win_gammon": 0.123516336,
+              "win_backgammon": 0.0038390688,
+              "lose_gammon": 0.20525116,
+              "lose_backgammon": 0.010964307
+            }
+          },
+          {
+            "rank": 7,
+            "move": "20/14 6/4",
+            "ply": 0,
+            "equity": -0.16087781,
+            "equity_diff": -0.38752586,
+            "probabilities": {
+              "win": 0.4683563,
+              "win_gammon": 0.114787176,
+              "win_backgammon": 0.0036217375,
+              "lose_gammon": 0.18776663,
+              "lose_backgammon": 0.0066350857
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/no-legal-move.json

@@ -0,0 +1,60 @@
+{
+  "id": "no-legal-move",
+  "type": "move",
+  "categories": [
+    "edge_case"
+  ],
+  "description": "Dame sur la barre face à un jan fermé : aucun coup légal avec 5-5.",
+  "position_id": "27YBBwAcz8EDQA",
+  "match_id": "cIkWAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      5,
+      5
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
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+          "win_gammon": 0.0023969053,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.8031097,
+          "lose_backgammon": 0.0024082477
+        },
+        "equity": -1.724852
+      },
+      "moves": {
+        "legal_move_count": 0,
+        "ranking": []
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.03421676,
+          "win_gammon": 0.002297687,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.8233655,
+          "lose_backgammon": 0.0014723836
+        },
+        "equity": -1.7541066
+      },
+      "moves": {
+        "legal_move_count": 0,
+        "ranking": []
+      }
+    }
+  }
+}

tests/reference/results/opening-21.json

@@ -0,0 +1,342 @@
+{
+  "id": "opening-21",
+  "type": "move",
+  "categories": [
+    "opening"
+  ],
+  "description": "Position de départ, premier coup 2-1, partie libre.",
+  "position_id": "4HPwATDgc/ABMA",
+  "match_id": "cAkFAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      2,
+      1
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
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+          "lose_gammon": 0.12963872,
+          "lose_backgammon": 0.007494344
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+        "equity": 0.06758106
+      },
+      "moves": {
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+        "ranking": [
+          {
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+            "move": "24/23 13/11",
+            "ply": 0,
+            "equity": -0.006838155,
+            "equity_diff": 0.0,
+            "probabilities": {
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+              "lose_gammon": 0.14145486,
+              "lose_backgammon": 0.0066102645
+            }
+          },
+          {
+            "rank": 2,
+            "move": "24/21",
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+              "lose_backgammon": 0.0044783447
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+          },
+          {
+            "rank": 3,
+            "move": "24/23 24/22",
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+          },
+          {
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+            "move": "13/10",
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+          },
+          {
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+              "lose_backgammon": 0.011742385
+            }
+          },
+          {
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+            "move": "24/22 6/5",
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+            "equity_diff": -0.052635536,
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+              "lose_gammon": 0.14951915,
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+            }
+          },
+          {
+            "rank": 7,
+            "move": "24/23 6/4",
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+          },
+          {
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+            "move": "13/11 8/7",
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+          },
+          {
+            "rank": 9,
+            "move": "24/22 8/7",
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+            "equity_diff": -0.108099304,
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+              "lose_backgammon": 0.0075841714
+            }
+          },
+          {
+            "rank": 10,
+            "move": "24/23 8/6",
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+            "equity": -0.11839062,
+            "equity_diff": -0.11155246,
+            "probabilities": {
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+              "lose_gammon": 0.15056747,
+              "lose_backgammon": 0.00598667
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
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+          "lose_backgammon": 0.0052878163
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+      },
+      "moves": {
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+        "ranking": [
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+            "move": "24/23 13/11",
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+          },
+          {
+            "rank": 2,
+            "move": "13/11 6/5",
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+          },
+          {
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+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/10",
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+            "probabilities": {
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+              "lose_backgammon": 0.0072744787
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+          },
+          {
+            "rank": 5,
+            "move": "24/23 24/22",
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+            "equity": -0.053742595,
+            "equity_diff": -0.053555395,
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+              "lose_backgammon": 0.004705831
+            }
+          },
+          {
+            "rank": 6,
+            "move": "24/22 6/5",
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+            "equity": -0.06897441,
+            "equity_diff": -0.06878721,
+            "probabilities": {
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+              "lose_gammon": 0.14551832,
+              "lose_backgammon": 0.007730984
+            }
+          },
+          {
+            "rank": 7,
+            "move": "24/23 6/4",
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+            "equity": -0.08121423,
+            "equity_diff": -0.08102702,
+            "probabilities": {
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+              "win_gammon": 0.12808256,
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+              "lose_gammon": 0.15290663,
+              "lose_backgammon": 0.0073501337
+            }
+          },
+          {
+            "rank": 8,
+            "move": "13/11 8/7",
+            "ply": 1,
+            "equity": -0.11000299,
+            "equity_diff": -0.109815784,
+            "probabilities": {
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+              "win_backgammon": 0.0053248443,
+              "lose_gammon": 0.16010761,
+              "lose_backgammon": 0.010958535
+            }
+          },
+          {
+            "rank": 9,
+            "move": "24/23 8/6",
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+            "equity": -0.11857612,
+            "equity_diff": -0.11838891,
+            "probabilities": {
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+              "lose_gammon": 0.15187313,
+              "lose_backgammon": 0.006525319
+            }
+          },
+          {
+            "rank": 10,
+            "move": "8/5",
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+            "equity": -0.12109409,
+            "equity_diff": -0.12090689,
+            "probabilities": {
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+              "win_gammon": 0.12901284,
+              "win_backgammon": 0.004891587,
+              "lose_gammon": 0.15662514,
+              "lose_backgammon": 0.009633442
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/opening-31.json

@@ -0,0 +1,342 @@
+{
+  "id": "opening-31",
+  "type": "move",
+  "categories": [
+    "opening"
+  ],
+  "description": "Position de départ, premier coup 3-1, partie libre.",
+  "position_id": "4HPwATDgc/ABMA",
+  "match_id": "cIkFAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
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+      3,
+      1
+    ],
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+    "crawford": false,
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+    "cube_value": 1,
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+  },
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+          {
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+        ]
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+    },
+    "2": {
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+          {
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+          {
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+          {
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+          {
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+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/opening-42.json

@@ -0,0 +1,342 @@
+{
+  "id": "opening-42",
+  "type": "move",
+  "categories": [
+    "opening"
+  ],
+  "description": "Position de départ, premier coup 4-2, partie libre.",
+  "position_id": "4HPwATDgc/ABMA",
+  "match_id": "cAkKAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
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+      2
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+              "win_gammon": 0.124620385,
+              "win_backgammon": 0.006344036,
+              "lose_gammon": 0.14542966,
+              "lose_backgammon": 0.0065992572
+            }
+          },
+          {
+            "rank": 10,
+            "move": "13/7",
+            "ply": 1,
+            "equity": -0.09336931,
+            "equity_diff": -0.2433449,
+            "probabilities": {
+              "win": 0.47393072,
+              "win_gammon": 0.13328187,
+              "win_backgammon": 0.00536958,
+              "lose_gammon": 0.14898883,
+              "lose_backgammon": 0.009068512
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/opening-64-match.json

@@ -0,0 +1,343 @@
+{
+  "id": "opening-64-match",
+  "type": "move",
+  "categories": [
+    "opening",
+    "match"
+  ],
+  "description": "Position de départ, premier coup 6-4, match en 5 points à 0-0.",
+  "position_id": "4HPwATDgc/ABMA",
+  "match_id": "cAmzAAAAAAAE",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      4
+    ],
+    "match_length": 5,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": false,
+    "beavers": false,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
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+          "lose_gammon": 0.12963872,
+          "lose_backgammon": 0.007494344
+        },
+        "equity": 0.065476716
+      },
+      "moves": {
+        "legal_move_count": 14,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "24/14",
+            "ply": 0,
+            "equity": 0.032145042,
+            "equity_diff": 0.0,
+            "probabilities": {
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+              "lose_gammon": 0.13388495,
+              "lose_backgammon": 0.004337863
+            }
+          },
+          {
+            "rank": 2,
+            "move": "24/18 13/9",
+            "ply": 0,
+            "equity": 0.012479822,
+            "equity_diff": -0.019665219,
+            "probabilities": {
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+              "lose_backgammon": 0.0061775735
+            }
+          },
+          {
+            "rank": 3,
+            "move": "8/2 6/2",
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+            "equity_diff": -0.04311239,
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+              "lose_backgammon": 0.0062718117
+            }
+          },
+          {
+            "rank": 4,
+            "move": "24/20 24/18",
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+              "lose_backgammon": 0.004476624
+            }
+          },
+          {
+            "rank": 5,
+            "move": "24/20 13/7",
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+              "lose_backgammon": 0.0059220004
+            }
+          },
+          {
+            "rank": 6,
+            "move": "13/9 13/7",
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+          },
+          {
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+            "move": "13/3",
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+          },
+          {
+            "rank": 8,
+            "move": "24/18 6/2",
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+            "probabilities": {
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+              "lose_backgammon": 0.007042799
+            }
+          },
+          {
+            "rank": 9,
+            "move": "24/20 8/2",
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+            "equity": -0.14994904,
+            "equity_diff": -0.18209408,
+            "probabilities": {
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+              "lose_gammon": 0.15673465,
+              "lose_backgammon": 0.0073330947
+            }
+          },
+          {
+            "rank": 10,
+            "move": "24/18 8/4",
+            "ply": 0,
+            "equity": -0.15389982,
+            "equity_diff": -0.18604486,
+            "probabilities": {
+              "win": 0.46788013,
+              "win_gammon": 0.1191007,
+              "win_backgammon": 0.0062833736,
+              "lose_gammon": 0.16351272,
+              "lose_backgammon": 0.008200929
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.5249716,
+          "win_gammon": 0.14948216,
+          "win_backgammon": 0.0068404144,
+          "lose_gammon": 0.12513305,
+          "lose_backgammon": 0.005308273
+        },
+        "equity": 0.07408072
+      },
+      "moves": {
+        "legal_move_count": 14,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "24/18 13/9",
+            "ply": 2,
+            "equity": 0.013528223,
+            "equity_diff": 0.0,
+            "probabilities": {
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+              "win_gammon": 0.13694319,
+              "win_backgammon": 0.006727477,
+              "lose_gammon": 0.13640973,
+              "lose_backgammon": 0.006058103
+            }
+          },
+          {
+            "rank": 2,
+            "move": "8/2 6/2",
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+            "equity": 0.012467488,
+            "equity_diff": -0.0010607354,
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+              "lose_backgammon": 0.00575178
+            }
+          },
+          {
+            "rank": 3,
+            "move": "24/14",
+            "ply": 2,
+            "equity": 0.004836519,
+            "equity_diff": -0.008691704,
+            "probabilities": {
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+              "win_gammon": 0.12267823,
+              "win_backgammon": 0.0045082034,
+              "lose_gammon": 0.13532133,
+              "lose_backgammon": 0.004538701
+            }
+          },
+          {
+            "rank": 4,
+            "move": "24/20 13/7",
+            "ply": 2,
+            "equity": -0.052962735,
+            "equity_diff": -0.066490956,
+            "probabilities": {
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+              "win_gammon": 0.13132541,
+              "win_backgammon": 0.0059679076,
+              "lose_gammon": 0.13361627,
+              "lose_backgammon": 0.006393481
+            }
+          },
+          {
+            "rank": 5,
+            "move": "24/20 24/18",
+            "ply": 2,
+            "equity": -0.06900789,
+            "equity_diff": -0.08253611,
+            "probabilities": {
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+              "win_backgammon": 0.0049995524,
+              "lose_gammon": 0.14722423,
+              "lose_backgammon": 0.0048995623
+            }
+          },
+          {
+            "rank": 6,
+            "move": "13/9 13/7",
+            "ply": 2,
+            "equity": -0.08274425,
+            "equity_diff": -0.09627247,
+            "probabilities": {
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+              "win_gammon": 0.14170869,
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+              "lose_gammon": 0.14952661,
+              "lose_backgammon": 0.009999642
+            }
+          },
+          {
+            "rank": 7,
+            "move": "13/3",
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+            "equity_diff": -0.12659669,
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+              "lose_gammon": 0.15410982,
+              "lose_backgammon": 0.009786302
+            }
+          },
+          {
+            "rank": 8,
+            "move": "24/18 6/2",
+            "ply": 1,
+            "equity": -0.118969575,
+            "equity_diff": -0.1324978,
+            "probabilities": {
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+              "win_gammon": 0.118122354,
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+              "lose_gammon": 0.16003127,
+              "lose_backgammon": 0.0070257727
+            }
+          },
+          {
+            "rank": 9,
+            "move": "24/18 8/4",
+            "ply": 1,
+            "equity": -0.14764719,
+            "equity_diff": -0.16117541,
+            "probabilities": {
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+              "win_gammon": 0.11914979,
+              "win_backgammon": 0.0055211615,
+              "lose_gammon": 0.16395095,
+              "lose_backgammon": 0.007844061
+            }
+          },
+          {
+            "rank": 10,
+            "move": "24/20 8/2",
+            "ply": 1,
+            "equity": -0.15855518,
+            "equity_diff": -0.17208341,
+            "probabilities": {
+              "win": 0.4609102,
+              "win_gammon": 0.12262041,
+              "win_backgammon": 0.005933554,
+              "lose_gammon": 0.15720539,
+              "lose_backgammon": 0.007826611
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/opening-65.json

@@ -0,0 +1,258 @@
+{
+  "id": "opening-65",
+  "type": "move",
+  "categories": [
+    "opening"
+  ],
+  "description": "Position de départ, premier coup 6-5, partie libre.",
+  "position_id": "4HPwATDgc/ABMA",
+  "match_id": "cAkXAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      5
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
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+          "lose_backgammon": 0.007494344
+        },
+        "equity": 0.06758106
+      },
+      "moves": {
+        "legal_move_count": 7,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "24/13",
+            "ply": 0,
+            "equity": 0.082985915,
+            "equity_diff": 0.0,
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+              "lose_gammon": 0.1293756,
+              "lose_backgammon": 0.0028542082
+            }
+          },
+          {
+            "rank": 2,
+            "move": "24/18 13/8",
+            "ply": 0,
+            "equity": 0.03631018,
+            "equity_diff": -0.046675734,
+            "probabilities": {
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+              "lose_gammon": 0.1354161,
+              "lose_backgammon": 0.0042471914
+            }
+          },
+          {
+            "rank": 3,
+            "move": "13/8 13/7",
+            "ply": 0,
+            "equity": -0.05142035,
+            "equity_diff": -0.13440627,
+            "probabilities": {
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+              "win_gammon": 0.1389856,
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+              "lose_gammon": 0.13843802,
+              "lose_backgammon": 0.0076389513
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/2",
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+            "equity": -0.13522762,
+            "equity_diff": -0.21821353,
+            "probabilities": {
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+              "lose_gammon": 0.15645416,
+              "lose_backgammon": 0.009462133
+            }
+          },
+          {
+            "rank": 5,
+            "move": "24/18 8/3",
+            "ply": 0,
+            "equity": -0.14635906,
+            "equity_diff": -0.22934496,
+            "probabilities": {
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+              "win_gammon": 0.1202679,
+              "win_backgammon": 0.0059867823,
+              "lose_gammon": 0.1645123,
+              "lose_backgammon": 0.007699021
+            }
+          },
+          {
+            "rank": 6,
+            "move": "13/7 8/3",
+            "ply": 0,
+            "equity": -0.17384717,
+            "equity_diff": -0.25683308,
+            "probabilities": {
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+              "win_gammon": 0.12771896,
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+              "lose_gammon": 0.1659471,
+              "lose_backgammon": 0.012491724
+            }
+          },
+          {
+            "rank": 7,
+            "move": "8/3 8/2",
+            "ply": 0,
+            "equity": -0.37779096,
+            "equity_diff": -0.46077687,
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+              "lose_gammon": 0.20434058,
+              "lose_backgammon": 0.02066777
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
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+          "win_gammon": 0.14950693,
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+          "lose_gammon": 0.124798514,
+          "lose_backgammon": 0.0052878163
+        },
+        "equity": 0.07594353
+      },
+      "moves": {
+        "legal_move_count": 7,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "24/13",
+            "ply": 2,
+            "equity": 0.07996891,
+            "equity_diff": 0.0,
+            "probabilities": {
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+              "win_gammon": 0.122699715,
+              "win_backgammon": 0.00370063,
+              "lose_gammon": 0.123845525,
+              "lose_backgammon": 0.0030469655
+            }
+          },
+          {
+            "rank": 2,
+            "move": "24/18 13/8",
+            "ply": 2,
+            "equity": 0.03882884,
+            "equity_diff": -0.04114007,
+            "probabilities": {
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+              "win_gammon": 0.13248979,
+              "win_backgammon": 0.005861981,
+              "lose_gammon": 0.13121237,
+              "lose_backgammon": 0.0042340625
+            }
+          },
+          {
+            "rank": 3,
+            "move": "13/8 13/7",
+            "ply": 1,
+            "equity": -0.06351556,
+            "equity_diff": -0.14348447,
+            "probabilities": {
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+              "win_gammon": 0.14122242,
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+              "lose_gammon": 0.14585866,
+              "lose_backgammon": 0.0088718245
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/2",
+            "ply": 1,
+            "equity": -0.12083713,
+            "equity_diff": -0.20080604,
+            "probabilities": {
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+              "win_gammon": 0.1349485,
+              "win_backgammon": 0.0057712086,
+              "lose_gammon": 0.1588556,
+              "lose_backgammon": 0.0101343
+            }
+          },
+          {
+            "rank": 5,
+            "move": "24/18 8/3",
+            "ply": 1,
+            "equity": -0.13999933,
+            "equity_diff": -0.21996823,
+            "probabilities": {
+              "win": 0.46690857,
+              "win_gammon": 0.11914817,
+              "win_backgammon": 0.0057104947,
+              "lose_gammon": 0.16515465,
+              "lose_backgammon": 0.008027693
+            }
+          },
+          {
+            "rank": 6,
+            "move": "13/7 8/3",
+            "ply": 0,
+            "equity": -0.16472448,
+            "equity_diff": -0.2446934,
+            "probabilities": {
+              "win": 0.45640922,
+              "win_gammon": 0.12771896,
+              "win_backgammon": 0.008785374,
+              "lose_gammon": 0.1659471,
+              "lose_backgammon": 0.012491724
+            }
+          },
+          {
+            "rank": 7,
+            "move": "8/3 8/2",
+            "ply": 0,
+            "equity": -0.35685992,
+            "equity_diff": -0.43682882,
+            "probabilities": {
+              "win": 0.41052693,
+              "win_gammon": 0.111031,
+              "win_backgammon": 0.0072218007,
+              "lose_gammon": 0.20434058,
+              "lose_backgammon": 0.02066777
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/prime-1.json

@@ -0,0 +1,342 @@
+{
+  "id": "prime-1",
+  "type": "move",
+  "categories": [
+    "prime"
+  ],
+  "description": "Prime de sept points (4 à 10) contre deux dames bloquées, 6-5 à jouer.",
+  "position_id": "sOfgASjYbtsAAA",
+  "match_id": "cAkXAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      5
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.8655992,
+          "win_gammon": 0.4658586,
+          "win_backgammon": 0.011909843,
+          "lose_gammon": 0.011431644,
+          "lose_backgammon": 0.00021469918
+        },
+        "equity": 1.1973205
+      },
+      "moves": {
+        "legal_move_count": 20,
+        "ranking": [
+          {
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+            "move": "10/5 10/4",
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+          {
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+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
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+        "ranking": [
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+          {
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+          {
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+          {
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+          },
+          {
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+              "lose_backgammon": 0.002442581
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+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/prime-vs-prime.json

@@ -0,0 +1,342 @@
+{
+  "id": "prime-vs-prime",
+  "type": "move",
+  "categories": [
+    "prime"
+  ],
+  "description": "Prime contre prime, 4-2 à jouer.",
+  "position_id": "4LZtAAbAbZsBAw",
+  "match_id": "cAkKAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
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+      4,
+      2
+    ],
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+    "score_player": 0,
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+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
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+          {
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+          {
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+          },
+          {
+            "rank": 10,
+            "move": "13/9 8/6",
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+            "equity_diff": -0.27765802,
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+              "lose_backgammon": 0.00678722
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
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+          "lose_backgammon": 0.0017157685
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+            "move": "13/11 13/9",
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+          {
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+          {
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+          },
+          {
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+          },
+          {
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+            "move": "13/9 11/9",
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+            "equity_diff": -0.1711359,
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+          },
+          {
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+            "move": "11/9 11/7",
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+            "equity_diff": -0.20087063,
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+          },
+          {
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+          },
+          {
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+            "move": "7/1",
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+              "lose_gammon": 0.09657972,
+              "lose_backgammon": 0.0024391545
+            }
+          },
+          {
+            "rank": 9,
+            "move": "11/9 7/3",
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+            "equity_diff": -0.2901723,
+            "probabilities": {
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+              "lose_gammon": 0.09338032,
+              "lose_backgammon": 0.0025060475
+            }
+          },
+          {
+            "rank": 10,
+            "move": "9/5 7/5",
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+            "equity_diff": -0.31702155,
+            "probabilities": {
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+              "lose_gammon": 0.09706599,
+              "lose_backgammon": 0.002300389
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/race-1.json

@@ -0,0 +1,342 @@
+{
+  "id": "race-1",
+  "type": "move",
+  "categories": [
+    "race"
+  ],
+  "description": "Course courte sans contact, 6-2 à jouer.",
+  "position_id": "trsXAADs7mwAAA",
+  "match_id": "cAkLAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      6,
+      2
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.22300714,
+          "win_gammon": 0.0,
+          "win_backgammon": 0.0,
+          "lose_gammon": 5.0172162e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": -0.5540359
+      },
+      "moves": {
+        "legal_move_count": 12,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "8/6 8/2",
+            "ply": 0,
+            "equity": -0.99325633,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.2110784,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 2,
+            "move": "9/3 8/6",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.20910054,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 3,
+            "move": "9/7 8/2",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.20572007,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 4,
+            "move": "8/2 3/1",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.20436102,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 5,
+            "move": "9/1",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.20345944,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 6,
+            "move": "9/7 9/3",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.20253927,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 7,
+            "move": "8/2 6/4",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.19989008,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 8,
+            "move": "8/2 4/2",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.19952285,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 9,
+            "move": "9/3 4/2",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.19951928,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 10,
+            "move": "9/3 6/4",
+            "ply": 0,
+            "equity": -1.0,
+            "equity_diff": -0.0067436695,
+            "probabilities": {
+              "win": 0.19472843,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.22191674,
+          "win_gammon": 0.0,
+          "win_backgammon": 0.0,
+          "lose_gammon": 4.3242515e-05,
+          "lose_backgammon": 0.0
+        },
+        "equity": -0.5562098
+      },
+      "moves": {
+        "legal_move_count": 12,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "8/6 8/2",
+            "ply": 2,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.21125406,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 2.647975e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 2,
+            "move": "9/3 8/6",
+            "ply": 2,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.2100758,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 1.8350003e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 3,
+            "move": "9/7 8/2",
+            "ply": 2,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.2079969,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 4.320381e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 4,
+            "move": "8/2 3/1",
+            "ply": 2,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.20499009,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 4.4597477e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 5,
+            "move": "9/1",
+            "ply": 2,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.20378089,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 4.320381e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 6,
+            "move": "9/7 9/3",
+            "ply": 2,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.2022022,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 4.320381e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 7,
+            "move": "8/2 6/4",
+            "ply": 1,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.19859427,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 8,
+            "move": "8/2 4/2",
+            "ply": 1,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.19832993,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 9,
+            "move": "9/3 4/2",
+            "ply": 1,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.19807649,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 10,
+            "move": "8/2 5/3",
+            "ply": 1,
+            "equity": -1.0,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.19526589,
+              "win_gammon": 0.0,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/reference/results/race-2.json

@@ -0,0 +1,342 @@
+{
+  "id": "race-2",
+  "type": "move",
+  "categories": [
+    "race"
+  ],
+  "description": "Course longue sans contact, 5-4 à jouer.",
+  "position_id": "cLezAQBwN2cGAA",
+  "match_id": "cIkSAAAAAAAA",
+  "gnubg_commit": "14b67984737ded0f6de43d63dcb789f729d9b06b",
+  "met": "Kazaross-XG2",
+  "context": {
+    "dice": [
+      5,
+      4
+    ],
+    "match_length": 0,
+    "score_player": 0,
+    "score_opponent": 0,
+    "crawford": false,
+    "jacoby": true,
+    "beavers": true,
+    "cube_value": 1,
+    "cube_owner": "centered"
+  },
+  "plies": {
+    "0": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.40590674,
+          "win_gammon": 5.0172162e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.00011031296,
+          "lose_backgammon": 0.0
+        },
+        "equity": -0.18824667
+      },
+      "moves": {
+        "legal_move_count": 29,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/9 11/6",
+            "ply": 0,
+            "equity": -0.22230339,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.42750978,
+              "win_gammon": 5.0172162e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 2,
+            "move": "11/6 9/5",
+            "ply": 0,
+            "equity": -0.22993731,
+            "equity_diff": -0.0076339245,
+            "probabilities": {
+              "win": 0.42501032,
+              "win_gammon": 7.926868e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 3,
+            "move": "13/8 9/5",
+            "ply": 0,
+            "equity": -0.23005769,
+            "equity_diff": -0.007754296,
+            "probabilities": {
+              "win": 0.42498118,
+              "win_gammon": 5.0172162e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/9 13/8",
+            "ply": 0,
+            "equity": -0.23073325,
+            "equity_diff": -0.008429855,
+            "probabilities": {
+              "win": 0.42476094,
+              "win_gammon": 5.0172162e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 5,
+            "move": "13/8 11/7",
+            "ply": 0,
+            "equity": -0.23153114,
+            "equity_diff": -0.009227753,
+            "probabilities": {
+              "win": 0.4245007,
+              "win_gammon": 5.0172162e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 6,
+            "move": "11/7 11/6",
+            "ply": 0,
+            "equity": -0.2335976,
+            "equity_diff": -0.011294216,
+            "probabilities": {
+              "win": 0.4238268,
+              "win_gammon": 5.0172162e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 7,
+            "move": "13/8 7/3",
+            "ply": 0,
+            "equity": -0.23374501,
+            "equity_diff": -0.011441618,
+            "probabilities": {
+              "win": 0.42377877,
+              "win_gammon": 5.0172162e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 8,
+            "move": "11/6 7/3",
+            "ply": 0,
+            "equity": -0.23394687,
+            "equity_diff": -0.011643484,
+            "probabilities": {
+              "win": 0.42370635,
+              "win_gammon": 6.923826e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 9,
+            "move": "13/4",
+            "ply": 0,
+            "equity": -0.23507257,
+            "equity_diff": -0.012769178,
+            "probabilities": {
+              "win": 0.42334592,
+              "win_gammon": 5.0172162e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 10,
+            "move": "13/9 7/2",
+            "ply": 0,
+            "equity": -0.23529215,
+            "equity_diff": -0.012988761,
+            "probabilities": {
+              "win": 0.4232731,
+              "win_gammon": 5.365527e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0172162e-05,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    },
+    "2": {
+      "evaluation": {
+        "probabilities": {
+          "win": 0.4062826,
+          "win_gammon": 5.017216e-05,
+          "win_backgammon": 0.0,
+          "lose_gammon": 0.00014703373,
+          "lose_backgammon": 0.0
+        },
+        "equity": -0.18753165
+      },
+      "moves": {
+        "legal_move_count": 29,
+        "ranking": [
+          {
+            "rank": 1,
+            "move": "13/9 11/6",
+            "ply": 2,
+            "equity": -0.21922025,
+            "equity_diff": 0.0,
+            "probabilities": {
+              "win": 0.42613363,
+              "win_gammon": 5.020016e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 2,
+            "move": "13/9 13/8",
+            "ply": 2,
+            "equity": -0.2202243,
+            "equity_diff": -0.0010040551,
+            "probabilities": {
+              "win": 0.4258194,
+              "win_gammon": 5.017216e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 3,
+            "move": "11/6 9/5",
+            "ply": 2,
+            "equity": -0.22022447,
+            "equity_diff": -0.001004219,
+            "probabilities": {
+              "win": 0.42580163,
+              "win_gammon": 5.0231392e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 4,
+            "move": "13/8 9/5",
+            "ply": 2,
+            "equity": -0.22088149,
+            "equity_diff": -0.001661241,
+            "probabilities": {
+              "win": 0.42555606,
+              "win_gammon": 5.017216e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 5,
+            "move": "11/7 11/6",
+            "ply": 2,
+            "equity": -0.22277355,
+            "equity_diff": -0.003553301,
+            "probabilities": {
+              "win": 0.42487752,
+              "win_gammon": 5.0212635e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.017216e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 6,
+            "move": "13/4",
+            "ply": 2,
+            "equity": -0.2230124,
+            "equity_diff": -0.0037921518,
+            "probabilities": {
+              "win": 0.42485,
+              "win_gammon": 5.024074e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 5.0183233e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 7,
+            "move": "11/7 9/4",
+            "ply": 1,
+            "equity": -0.22985312,
+            "equity_diff": -0.010632873,
+            "probabilities": {
+              "win": 0.4204048,
+              "win_gammon": 5.017216e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 6.302685e-05,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 8,
+            "move": "13/8 11/7",
+            "ply": 1,
+            "equity": -0.23169218,
+            "equity_diff": -0.012471929,
+            "probabilities": {
+              "win": 0.4197837,
+              "win_gammon": 5.017216e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.00022215334,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 9,
+            "move": "9/4 7/3",
+            "ply": 1,
+            "equity": -0.23420003,
+            "equity_diff": -0.01497978,
+            "probabilities": {
+              "win": 0.4189803,
+              "win_gammon": 5.017216e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.00013822057,
+              "lose_backgammon": 0.0
+            }
+          },
+          {
+            "rank": 10,
+            "move": "13/9 7/2",
+            "ply": 1,
+            "equity": -0.23561361,
+            "equity_diff": -0.016393363,
+            "probabilities": {
+              "win": 0.4184612,
+              "win_gammon": 5.017216e-05,
+              "win_backgammon": 0.0,
+              "lose_gammon": 0.00018745882,
+              "lose_backgammon": 0.0
+            }
+          }
+        ]
+      }
+    }
+  }
+}

tests/test_reference.sh

@@ -0,0 +1,111 @@
+#!/usr/bin/env bash
+# Vérifie la cohérence des positions de référence (tests/reference/) :
+# JSON valide, au moins 30 positions, chaque catégorie présente, un résultat
+# par position aux niveaux 0 et 2 plis avec tous les champs du format
+# (voir tests/reference/README.md). Ne lance pas Docker ni gnubg.
+
+set -euo pipefail
+cd "$(dirname "$0")/reference"
+
+command -v jq >/dev/null || { echo "jq est requis : sudo apt install jq"; exit 1; }
+
+erreurs=0
+signaler() {
+	echo "$1"
+	erreurs=$((erreurs + 1))
+}
+
+jq empty positions.json || { echo "positions.json : JSON invalide"; exit 1; }
+
+nombre="$(jq '.positions | length' positions.json)"
+[ "$nombre" -ge 30 ] || signaler "positions.json : $nombre positions, 30 au minimum"
+
+doublons="$(jq -r '[.positions[].id] | group_by(.) | map(select(length > 1)[0]) | join(" ")' positions.json)"
+[ -z "$doublons" ] || signaler "positions.json : identifiants en double : $doublons"
+
+for categorie in opening middlegame prime blitz race bearoff \
+	cube_no_double cube_double_take cube_double_pass match crawford jacoby; do
+	jq -e --arg c "$categorie" 'any(.positions[]; .categories | index($c))' positions.json >/dev/null \
+		|| signaler "positions.json : aucune position de catégorie « $categorie »"
+done
+
+# Champs obligatoires de chaque position d'entrée.
+invalides="$(jq -r '.positions[]
+	| select((.id | type) != "string"
+		or (.type | IN("move", "cube") | not)
+		or (.position_id | test("^[A-Za-z0-9+/]{14}$") | not)
+		or (.match_id | test("^[A-Za-z0-9+/]{12}$") | not)
+		or (.categories | type) != "array"
+		or (.description | type) != "string"
+		or (if .type == "move" then (.dice | type) != "array" else .dice != null end))
+	| "positions.json : position \(.id) incomplète ou invalide"' positions.json)"
+[ -z "$invalides" ] || signaler "$invalides"
+
+# Filtre jq : liste les défauts d'un fichier de résultat (vide si conforme).
+read -r -d '' controle <<'JQ' || true
+def nombre: type == "number";
+def probas: (keys == ["lose_backgammon", "lose_gammon", "win", "win_backgammon", "win_gammon"])
+	and all(.[]; nombre and . >= 0 and . <= 1);
+def defauts($pos):
+	(if .id != $pos.id or .type != $pos.type or .position_id != $pos.position_id
+		or .match_id != $pos.match_id or .categories != $pos.categories
+	 then "en-tête différent de positions.json" else empty end),
+	(if (.gnubg_commit | test("^[0-9a-f]{40}$")) and .met == "Kazaross-XG2" then empty
+	 else "gnubg_commit ou met invalide" end),
+	(.context | if (.dice == $pos.dice) and (.match_length | nombre)
+		and (.score_player | nombre) and (.score_opponent | nombre)
+		and (.cube_value | nombre) and (.cube_owner | IN("centered", "player", "opponent"))
+		and ([.crawford, .jacoby, .beavers] | all(type == "boolean"))
+	 then empty else "context incomplet" end),
+	(if (.plies | keys) == ["0", "2"] then empty else "niveaux attendus : 0 et 2" end),
+	(.plies | to_entries[] | .key as $n | .value |
+		(if (.evaluation.probabilities | probas) and (.evaluation.equity | nombre)
+		 then empty else "niveau \($n) : evaluation incomplète" end),
+		(if $pos.type == "move" then
+			(.moves | if (.legal_move_count | nombre)
+				and (.ranking | length) == ([.legal_move_count, 10] | min)
+				and all(.ranking[]; (.rank | nombre) and (.move | type) == "string"
+					and (.ply | nombre) and (.equity | nombre) and (.equity_diff | nombre)
+					and (.probabilities | probas))
+			 then empty else "niveau \($n) : classement des coups incomplet" end)
+		 else
+			(.cube | if ([.no_double, .double_take, .double_pass, .optimal] | all(nombre))
+				and (.decision | type) == "string" and (.decision_text | type) == "string"
+			 then empty else "niveau \($n) : décision de videau incomplète" end)
+		 end));
+defauts($pos)
+JQ
+
+# Décision de videau attendue à 2 plis selon la catégorie.
+read -r -d '' decision <<'JQ' || true
+.categories as $c | .plies["2"].cube.decision as $d
+| if ($c | index("cube_no_double")) and ($d | test("^NO_?(RE)?DOUBLE_") | not) then "pas de double attendu, gnubg dit \($d)"
+  elif ($c | index("cube_double_take")) and ($d | IN("DOUBLE_TAKE", "REDOUBLE_TAKE") | not) then "double/prend attendu, gnubg dit \($d)"
+  elif ($c | index("cube_double_pass")) and ($d | IN("DOUBLE_PASS", "REDOUBLE_PASS") | not) then "double/passe attendu, gnubg dit \($d)"
+  else empty end
+JQ
+
+mapfile -t ids < <(jq -r '.positions[].id' positions.json)
+for id in "${ids[@]}"; do
+	f="results/$id.json"
+	if [ ! -f "$f" ]; then
+		signaler "$f absent : lancer make reference"
+		continue
+	fi
+	if ! jq empty "$f" 2>/dev/null; then
+		signaler "$f : JSON invalide"
+		continue
+	fi
+	pos="$(jq --arg id "$id" '.positions[] | select(.id == $id)' positions.json)"
+	while read -r defaut; do
+		[ -n "$defaut" ] && signaler "$f : $defaut"
+	done < <(jq -r --argjson pos "$pos" "$controle" "$f"; jq -r "$decision" "$f")
+done
+
+for f in results/*.json; do
+	[ -e "$f" ] || continue
+	id="$(basename "$f" .json)"
+	printf '%s\n' "${ids[@]}" | grep -qxF "$id" || signaler "$f : position absente de positions.json"
+done
+
+[ "$erreurs" -eq 0 ]