Chess Puzzle #sDPSf — Master, Black to move, middlegame

Position

White: king g1; queen d1; rooks a1/e1; bishops c1/c2; knights e6/f7; pawns a2/c3/e5/g3/h2. Black: king h7; queen h3; rooks a8/f8; bishops a6/f2; knight a5; pawns b6/c7/d7/g6. White is ahead by 4 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kh1 — king g1→h1. Now Black to move.
2. Best move: Qf1+ — queen h3→f1, gives check. Opponent replies Rxf1 (rook e1→f1, captures queen).
3. Best move: Bb7+ — bishop a6→b7, gives check. Opponent replies Be4 (bishop c2→e4).
4. Best move: Bxe4+ — bishop b7→e4, captures bishop, gives check. Opponent replies Qf3 (queen d1→f3).
5. Best move: Bxf3# — bishop e4→f3, captures queen, delivers checkmate.

Tactical themes

double bishop mate, kingside attack, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Bxf3# delivering checkmate.

Position data

FEN: r4r2/2pp1N1k/bp2N1p1/n3P3/8/2P3Pq/P1B2b1P/R1BQR1K1 w - - 0 22

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