Chess Puzzle #1euqg — Beginner, Black to move, middlegame

Position

White: king h2; rook d8; bishop f3; pawns b3/c7/g2/h3. Black: king g7; queen c1; pawns b4/b5/f5/f7/g4/h4. Black is ahead by 3 points of material. Black to move.

Solution (1 move)

1. Opponent setup: c8=Q — pawn c7→c8, promotes to queen. Now Black to move.
2. Best move: g3# — pawn g4→g3, delivers checkmate.

Tactical themes

endgame, master, mate, mate in 1, one move. The combination ends with g3# delivering checkmate.

Position data

FEN: 3R4/2P2pk1/8/1p3p2/1p4pp/1P3B1P/6PK/2q5 w - - 2 43

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