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

Position

White: king h3; queen c8; rook a8; knight c6; pawns d5/e4/g2/h5. Black: king g7; queen f6; rook f8; bishop e5; pawns d6/f3/g5/h6. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Qxf8+ — queen c8→f8, captures rook, gives check. Now Black to move.
2. Best move: Qxf8 — queen f6→f8, captures queen. Opponent replies Rxf8 (rook a8→f8, captures queen).
3. Best move: g4+ — pawn g5→g4, gives check. Opponent replies Kxg4 (king h3→g4, captures pawn).
4. Best move: fxg2 — pawn f3→g2, captures pawn. Opponent replies Kf3 (king g4→f3).
5. Best move: g1=Q — pawn g2→g1, promotes to queen.

Tactical themes

advanced pawn, crushing, deflection, endgame, exposed king, promotion, very long. The key move Qxf8 wins material.

Position data

FEN: R1Q2r2/6k1/2Np1q1p/3Pb1pP/4P3/5p1K/6P1/8 w - - 4 42

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