Chess Puzzle #Txv8c — Advanced, White to move, endgame

Position

White: king f8; pawns d4/g4/g6/h7. Black: king h8; knight d8; pawns a7/b2/d5/e6. Black is ahead by 3 points of material. White to move.

Solution (3 moves)

1. Opponent setup: b1=Q — pawn b2→b1, promotes to queen. Now White to move.
2. Best move: g7+ — pawn g6→g7, gives check. Opponent replies Kxh7 (king h8→h7, captures pawn).
3. Best move: g8=Q+ — pawn g7→g8, promotes to queen, gives check. Opponent replies Kh6 (king h7→h6).
4. Best move: Qg7# — queen g8→g7, delivers checkmate.

Tactical themes

advanced pawn, endgame, exposed king, long, mate, mate in 3, promotion. The combination ends with Qg7# delivering checkmate.

Position data

FEN: 3n1K1k/p6P/4p1P1/3p4/3P2P1/8/1p6/8 b - - 4 51

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