Chess Puzzle #GrRrk — Expert, Black to move, middlegame

Position

White: king g2; queen d5; rook b7; bishop d4; pawns b2/b3/g3. Black: king g6; queen e2; rook f7; pawns d7/g5/h6. White is ahead by 3 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kh3 — king g2→h3. Now Black to move.
2. Best move: g4+ — pawn g5→g4, gives check. Opponent replies Kh4 (king h3→h4).
3. Best move: Qh2+ — queen e2→h2, gives check. Opponent replies Kxg4 (king h4→g4, captures pawn).
4. Best move: h5+ — pawn h6→h5, gives check. Opponent replies Qxh5+ (queen d5→h5, captures pawn, gives check).
5. Best move: Qxh5# — queen h2→h5, captures queen, delivers checkmate.

Tactical themes

endgame, mate, mate in 4, very long. The combination ends with Qxh5# delivering checkmate.

Position data

FEN: 8/1R1p1r2/6kp/3Q2p1/3B4/1P4P1/1P2q1K1/8 w - - 3 37

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