Chess Puzzle #EpOsw — Advanced, Black to move, endgame

Position

White: king g4; queens b5/b8; knight d7; pawns e5/f4/h2. Black: king g8; queen g2; bishop f8; pawns f7/h7. White is ahead by 10 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: Kh5 — king g4→h5. Now Black to move.
2. Best move: Qh3+ — queen g2→h3, gives check. Opponent replies Kg5 (king h5→g5).
3. Best move: h6+ — pawn h7→h6, gives check. Opponent replies Kf6 (king g5→f6).
4. Best move: Qe6# — queen h3→e6, delivers checkmate.

Tactical themes

endgame, long, mate, mate in 3. The combination ends with Qe6# delivering checkmate.

Position data

FEN: 1Q3bk1/3N1p1p/8/1Q2P3/5PK1/8/6qP/8 w - - 1 40

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