{
  "schema_version": "1.0",
  "generator": {
    "name": "PlayChessOnline Position Review Generator",
    "version": "1.0.0",
    "generated_at_utc": "2026-08-23T14:07:05.711450+00:00",
    "runtime_seconds": 9.340072,
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    "platform": "Windows-10-10.0.19045-SP0"
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    "slug": "morphy-opera-game-pwocc",
    "title": "Morphy's Opera Game - open lines and finishing geometry",
    "source": {
      "label": "Petts Wood and Orpington Chess Club 25 Great Games collection",
      "url": "https://www.pwocc.org.uk/25-great-games/"
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          "key": "v8_sharp",
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          "intended_profile": "sharp club-player profile on curated data",
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            "is_played_move": true,
            "is_engine_best_move": true,
            "selected_by_models": [],
            "score": {
              "centipawns": 516,
              "is_mate": false,
              "mate_in": null,
              "comparison_cp": 516
            },
            "loss_cp": 0,
            "within_100cp": true,
            "within_200cp": true,
            "pv": {
              "uci": [
                "d1d7",
                "f6d7",
                "g5e7",
                "f8e7",
                "b5d7",
                "d8d7",
                "b3b8",
                "d7d8",
                "b8e5",
                "e8f8",
                "h1d1",
                "d8c8",
                "e5h5",
                "c8e8",
                "f2f4",
                "h7h6",
                "e4e5",
                "g7g6",
                "h5f3",
                "h6h5",
                "f3d3"
              ],
              "san": "13. Rxd7 Nxd7 14. Bxe7 Bxe7 15. Bxd7+ Rxd7 16. Qb8+ Rd8 17. Qxe5 Kf8 18. Rd1 Rc8 19. Qh5 Re8 20. f4 h6 21. e5 g6 22. Qf3 h5 23. Qd3"
            },
            "nodes": 250011,
            "depth": 19,
            "seldepth": 31
          },
          {
            "move": {
              "uci": "g5f6",
              "san": "Bxf6"
            },
            "is_played_move": false,
            "is_engine_best_move": false,
            "selected_by_models": [
              "V17 File Pressure",
              "V8 Sharp",
              "V9 Positional"
            ],
            "score": {
              "centipawns": 322,
              "is_mate": false,
              "mate_in": null,
              "comparison_cp": 322
            },
            "loss_cp": 181,
            "within_100cp": false,
            "within_200cp": true,
            "pv": {
              "uci": [
                "g5f6",
                "e7f6",
                "b3d5",
                "f8e7",
                "b5d7",
                "e8f8",
                "c1b1",
                "h7h5",
                "d1d3",
                "h8h6",
                "d3f3",
                "f6f3",
                "g2f3",
                "h6g6"
              ],
              "san": "13. Bxf6 Qxf6 14. Qd5 Be7 15. Bxd7+ Kf8 16. Kb1 h5 17. Rd3 Rh6 18. Rf3 Qxf3 19. gxf3 Rg6"
            },
            "nodes": 250445,
            "depth": 16,
            "seldepth": 34
          }
        ]
      }
    },
    {
      "id": "final-net-16",
      "label": "White to move on move 16",
      "fen": "4kb1r/p2n1ppp/4q3/4p1B1/4P3/1Q6/PPP2PPP/2KR4 w k - 0 16",
      "side_to_move": "white",
      "legal_move_count": 46,
      "played_move": {
        "uci": "b3b8",
        "san": "Qb8+"
      },
      "model_consensus": {
        "distinct_top_moves": 1,
        "most_selected_move": {
          "uci": "b3e6",
          "san": "Qxe6+"
        },
        "most_selected_count": 6
      },
      "public_choice_gate": {
        "required_distinct_safe_model_moves": 3,
        "safety_threshold_cp": 100,
        "observed_distinct_model_moves": 1,
        "safe_distinct_model_moves": 0,
        "passes": false
      },
      "models": [
        {
          "key": "v6_active",
          "label": "V6 Active",
          "intended_profile": "active, initiative-seeking",
          "top_move": {
            "uci": "b3e6",
            "san": "Qxe6+",
            "hybrid_score_cp": 527.00192
          },
          "top_three": [
            {
              "uci": "b3e6",
              "san": "Qxe6+",
              "hybrid_score_cp": 527.00192
            },
            {
              "uci": "d1d7",
              "san": "Rxd7",
              "hybrid_score_cp": 142.777106
            },
            {
              "uci": "b3g3",
              "san": "Qg3",
              "hybrid_score_cp": -75.864427
            }
          ]
        },
        {
          "key": "v8_sharp",
          "label": "V8 Sharp",
          "intended_profile": "sharp club-player profile on curated data",
          "top_move": {
            "uci": "b3e6",
            "san": "Qxe6+",
            "hybrid_score_cp": 534.492462
          },
          "top_three": [
            {
              "uci": "b3e6",
              "san": "Qxe6+",
              "hybrid_score_cp": 534.492462
            },
            {
              "uci": "d1d7",
              "san": "Rxd7",
              "hybrid_score_cp": 145.893803
            },
            {
              "uci": "g5h4",
              "san": "Bh4",
              "hybrid_score_cp": -75.084873
            }
          ]
        },
        {
          "key": "v9_positional",
          "label": "V9 Positional",
          "intended_profile": "calm positional pressure",
          "top_move": {
            "uci": "b3e6",
            "san": "Qxe6+",
            "hybrid_score_cp": 534.979834
          },
          "top_three": [
            {
              "uci": "b3e6",
              "san": "Qxe6+",
              "hybrid_score_cp": 534.979834
            },
            {
              "uci": "d1d7",
              "san": "Rxd7",
              "hybrid_score_cp": 145.556779
            },
            {
              "uci": "g5e3",
              "san": "Be3",
              "hybrid_score_cp": -74.792535
            }
          ]
        },
        {
          "key": "v15_endgame",
          "label": "V15 Endgame",
          "intended_profile": "endgame-focused distilled evaluator",
          "top_move": {
            "uci": "b3e6",
            "san": "Qxe6+",
            "hybrid_score_cp": 555.681235
          },
          "top_three": [
            {
              "uci": "b3e6",
              "san": "Qxe6+",
              "hybrid_score_cp": 555.681235
            },
            {
              "uci": "d1d7",
              "san": "Rxd7",
              "hybrid_score_cp": 143.436244
            },
            {
              "uci": "b3d3",
              "san": "Qd3",
              "hybrid_score_cp": -82.013745
            }
          ]
        },
        {
          "key": "v17_file_pressure",
          "label": "V17 File Pressure",
          "intended_profile": "open-file and rook-pressure weighting",
          "top_move": {
            "uci": "b3e6",
            "san": "Qxe6+",
            "hybrid_score_cp": 533.592535
          },
          "top_three": [
            {
              "uci": "b3e6",
              "san": "Qxe6+",
              "hybrid_score_cp": 533.592535
            },
            {
              "uci": "d1d7",
              "san": "Rxd7",
              "hybrid_score_cp": 145.78231
            },
            {
              "uci": "b3d3",
              "san": "Qd3",
              "hybrid_score_cp": -74.584962
            }
          ]
        },
        {
          "key": "v18_defensive",
          "label": "V18 Defensive",
          "intended_profile": "defensive tension and counterpunch weighting",
          "top_move": {
            "uci": "b3e6",
            "san": "Qxe6+",
            "hybrid_score_cp": 523.497574
          },
          "top_three": [
            {
              "uci": "b3e6",
              "san": "Qxe6+",
              "hybrid_score_cp": 523.497574
            },
            {
              "uci": "d1d7",
              "san": "Rxd7",
              "hybrid_score_cp": 143.80048
            },
            {
              "uci": "b3b7",
              "san": "Qb7",
              "hybrid_score_cp": -75.599391
            }
          ]
        }
      ],
      "stockfish": {
        "best_move": {
          "uci": "b3b8",
          "san": "Qb8+"
        },
        "best_score": {
          "centipawns": null,
          "is_mate": true,
          "mate_in": 2,
          "comparison_cp": 99998
        },
        "best_pv": {
          "uci": [
            "b3b8",
            "d7b8",
            "d1d8"
          ],
          "san": "16. Qb8+ Nxb8 17. Rd8#"
        },
        "nodes": 34526,
        "depth": 245,
        "seldepth": 4,
        "verified_choices": [
          {
            "move": {
              "uci": "b3b8",
              "san": "Qb8+"
            },
            "is_played_move": true,
            "is_engine_best_move": true,
            "selected_by_models": [],
            "score": {
              "centipawns": null,
              "is_mate": true,
              "mate_in": 2,
              "comparison_cp": 99998
            },
            "loss_cp": 0,
            "within_100cp": true,
            "within_200cp": true,
            "pv": {
              "uci": [
                "b3b8",
                "d7b8",
                "d1d8"
              ],
              "san": "16. Qb8+ Nxb8 17. Rd8#"
            },
            "nodes": 1473,
            "depth": 245,
            "seldepth": 4
          },
          {
            "move": {
              "uci": "b3e6",
              "san": "Qxe6+"
            },
            "is_played_move": false,
            "is_engine_best_move": false,
            "selected_by_models": [
              "V15 Endgame",
              "V17 File Pressure",
              "V18 Defensive",
              "V6 Active",
              "V8 Sharp",
              "V9 Positional"
            ],
            "score": {
              "centipawns": -125,
              "is_mate": false,
              "mate_in": null,
              "comparison_cp": -125
            },
            "loss_cp": 100123,
            "within_100cp": false,
            "within_200cp": false,
            "pv": {
              "uci": [
                "b3e6",
                "f7e6"
              ],
              "san": "16. Qxe6+ fxe6"
            },
            "nodes": 250382,
            "depth": 16,
            "seldepth": 21
          }
        ]
      }
    }
  ],
  "limitations": [
    "The six neural checkpoints are scalar evaluators, not move-policy models or explanation models.",
    "Their 768 inputs encode piece placement only; side to move is applied after inference, while castling rights, en-passant state, repetition, move history, and clocks are not model inputs.",
    "Profile labels describe intended training or runtime behavior and do not prove human-like personality or internal understanding.",
    "Stockfish results use a fixed node budget and configuration and are a verification snapshot, not a claim of perfect play.",
    "Stockfish was required to use two search threads. Parallel search can produce small score, depth, node-count, or PV differences on a fresh rerun even when the configured node limit is unchanged.",
    "Centipawn loss uses a 100,000 cp comparison value for forced-mate scores; mate status and mate distance are also reported separately.",
    "The analysis does not measure Elo, playing strength, or clean unseen test accuracy.",
    "Any reader-facing move explanation must describe observable chess features; it must not be presented as the model's internal reasoning."
  ]
}