Chess Puzzle #K5hvb — Intermediate, Black to move, middlegame

Position

White: king b1; queen g6; rooks a1/h1; bishop d3; pawns a3/c2/e5/g2/h4. Black: king c7; queen f4; rooks d7/f1; bishop c6; pawns a7/b7/c3/e6. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: Rxf1 — rook h1→f1, captures rook. Now Black to move.
2. Best move: Qxf1+ — queen f4→f1, captures rook, gives check. Opponent replies Bxf1 (bishop d3→f1, captures queen).
3. Best move: Rd1+ — rook d7→d1, gives check. Opponent replies Ka2 (king b1→a2).
4. Best move: Bd5+ — bishop c6→d5, gives check. Opponent replies Bc4 (bishop f1→c4).
5. Best move: Bxc4# — bishop d5→c4, captures bishop, delivers checkmate.

Tactical themes

fork, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Bxc4# delivering checkmate.

Position data

FEN: 8/ppkr4/2b1p1Q1/4P3/5q1P/P1pB4/2P3P1/RK3r1R w - - 4 30

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