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

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{
"patternType": "DOUBLE_ATTACK",
"description": "Queen move that checks the king while targeting an undefended rook.",
"cases": [
{
"id": "double_attack_queen_check_and_rook",
"initialFen": "r3k3/8/8/8/8/8/8/3Q2K1 w - - 0 1",
"sideToMove": "white",
"bestMove": { "san": "Qa4+", "uci": "d1a4" },
"resultingFen": "r3k3/8/8/8/Q7/8/8/6K1 b - - 1 1",
"expectedPattern": {
"type": "DOUBLE_ATTACK",
"side": "white",
"attackerSquares": ["a4"],
"targetSquares": ["e8", "a8"],
"explanationKey": "queen_check_and_rook"
},
"context": "A single queen move gives check on e8 and simultaneously eyes the rook on a8.",
"tags": ["queen", "double_attack"]
}
]
}