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

Position

White: king g1; queen e6; rooks b6/c1; bishop e4; pawns f2/g2/h4. Black: king b8; queen c7; rooks d1/d8; pawns b7/c3/f4/g4/h5. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: Rxd1 — rook c1→d1, captures rook. Now Black to move.
2. Best move: Rxd1+ — rook d8→d1, captures rook, gives check. Opponent replies Kh2 (king g1→h2).
3. Best move: g3+ — pawn g4→g3, gives check. Opponent replies fxg3 (pawn f2→g3, captures pawn).
4. Best move: fxg3+ — pawn f4→g3, captures pawn, gives check. Opponent replies Kh3 (king h2→h3).
5. Best move: Rh1# — rook d1→h1, delivers checkmate.

Tactical themes

endgame, master, mate, mate in 4, very long. The combination ends with Rh1# delivering checkmate.

Position data

FEN: 1k1r4/1pq5/1R2Q3/7p/4BppP/2p5/5PP1/2Rr2K1 w - - 1 37

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