Chess Puzzle #4ERkl — Master, Black to move, middlegame

Position

White: king g1; queen a6; rook f1; bishop b3; pawns a2/b2/c2/d4/f3/g2/h2. Black: king g7; queen e2; bishop f5; knight h5; pawns b5/f7/g6/h7. White is ahead by 5 points of material. Black to move.

Solution (7 moves)

1. Opponent setup: Qa7 — queen a6→a7. Now Black to move.
2. Best move: Nf4 — knight h5→f4. Opponent replies Qxf7+ (queen a7→f7, captures pawn, gives check).
3. Best move: Kh6 — king g7→h6. Opponent replies Qf8+ (queen f7→f8, gives check).
4. Best move: Kg5 — king h6→g5. Opponent replies h4+ (pawn h2→h4, gives check).
5. Best move: Kh5 — king g5→h5. Opponent replies g4+ (pawn g2→g4, gives check).
6. Best move: Kxh4 — king h5→h4, captures pawn. Opponent replies Qh6+ (queen f8→h6, gives check).
7. Best move: Kg3 — king h4→g3. Opponent replies Qxf4+ (queen h6→f4, captures knight, gives check).
8. Best move: Kxf4 — king g3→f4, captures queen.

Tactical themes

crushing, endgame, very long. The key move is Nf4.

Position data

FEN: 8/5pkp/Q5p1/1p3b1n/3P4/1B3P2/PPP1q1PP/5RK1 w - - 3 26

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