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chess-project/fixtures/tactics/trapped_piece.json
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2025-12-06 09:23:04 +01:00

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{
"patternType": "TRAPPED_PIECE",
"description": "Illustrates a bishop trapped in the corner with no safe squares.",
"cases": [
{
"id": "trapped_corner_bishop",
"initialFen": "6kb/6P1/5K2/8/8/8/8/8 w - - 0 1",
"sideToMove": "white",
"bestMove": { "san": "gxh8=Q+", "uci": "g7h8q" },
"resultingFen": "6kQ/8/5K2/8/8/8/8/8 b - - 0 1",
"expectedPattern": {
"type": "TRAPPED_PIECE",
"side": "white",
"attackerSquares": ["g7"],
"targetSquares": ["h8"],
"explanationKey": "corner_trap"
},
"context": "The black bishop on h8 cannot escape because of the pawn on g7 and the king on f6.",
"tags": ["endgame", "conversion"]
}
]
}