Chess Puzzle #51Spz — Advanced, Black to move, middlegame

Position

White: king g1; queen c4; rooks c2/e3; knight e6; pawns a2/b4/e4/g3/h2. Black: king b8; queen d1; rooks d8/h3; pawns a7/b6/f6/g5. White is ahead by 4 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kg2 — king g1→g2. Now Black to move.
2. Best move: Rxh2+ — rook h3→h2, captures pawn, gives check. Opponent replies Kxh2 (king g2→h2, captures rook).
3. Best move: Rh8+ — rook d8→h8, gives check. Opponent replies Kg2 (king h2→g2).
4. Best move: Qh1+ — queen d1→h1, gives check. Opponent replies Kf2 (king g2→f2).
5. Best move: Rh2# — rook h8→h2, delivers checkmate.

Tactical themes

attraction, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Rh2# delivering checkmate.

Position data

FEN: 1k1r4/p7/1p2Np2/6p1/1PQ1P3/4R1Pr/P1R4P/3q2K1 w - - 1 37

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