Chess Puzzle #GBYdo — Advanced, Black to move, middlegame

Position

White: king g1; queen f2; rooks d1/e1; bishop f5; pawns a2/b2/c2/g4/h3. Black: king f8; queen c6; rooks g7/g8; knight f6; pawns a7/b7/d6/e5/f7. Material is balanced. Black to move.

Solution (3 moves)

1. Opponent setup: Qxa7 — queen f2→a7, captures pawn. Now Black to move.
2. Best move: Nxg4 — knight f6→g4, captures pawn. Opponent replies Qb8+ (queen a7→b8, gives check).
3. Best move: Ke7 — king f8→e7. Opponent replies Qxd6+ (queen b8→d6, captures pawn, gives check).
4. Best move: Qxd6 — queen c6→d6, captures queen.

Tactical themes

crushing, long, middlegame. The key move Nxg4 wins material.

Position data

FEN: 5kr1/pp3pr1/2qp1n2/4pB2/6P1/7P/PPP2Q2/3RR1K1 w - - 1 27

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