stefan-kp
24 lines
815 B
JSON
24 lines
815 B
JSON
{
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"patternType": "SKEWER",
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"description": "Bishop skewer forcing the king off the diagonal so the trailing queen can be captured.",
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"cases": [
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{
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"id": "skewer_bishop_on_long_diagonal",
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"initialFen": "7q/6k1/8/8/8/8/1B6/6K1 w - - 0 1",
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"sideToMove": "white",
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"bestMove": { "san": "Bc3+", "uci": "b2c3" },
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"resultingFen": "7q/6k1/8/8/8/2B5/8/6K1 b - - 1 1",
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"expectedPattern": {
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"type": "SKEWER",
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"side": "white",
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"attackerSquares": ["c3"],
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"targetSquares": ["g7", "h8"],
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"keySquares": ["g7"],
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"explanationKey": "king_in_front_of_queen"
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},
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"context": "Minimal material: the move Bc3+ attacks the king on g7; after the king moves the queen on h8 is lost.",
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"tags": ["endgame", "long_diagonal"]
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}
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]
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}
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