Chess Puzzle #ERycz — Advanced, Black to move, middlegame

Position

White: king g1; queen h6; rook g3; pawns a2/b3/c4/e3/g2/h4. Black: king g8; queen f1; rooks d7/d8; bishop e6; pawns a7/b7/c7/f6/g7. Black is ahead by 7 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kxf1 — king g1→f1, captures queen. Now Black to move.
2. Best move: Rd1+ — rook d7→d1, gives check. Opponent replies Kf2 (king f1→f2).
3. Best move: R8d2+ — rook d8→d2, gives check. Opponent replies Kf3 (king f2→f3).
4. Best move: Rf1+ — rook d1→f1, gives check. Opponent replies Ke4 (king f3→e4).
5. Best move: Bf5# — bishop e6→f5, delivers checkmate.

Tactical themes

endgame, mate, mate in 4, very long. The combination ends with Bf5# delivering checkmate.

Position data

FEN: 3r2k1/pppr2p1/4bp1Q/8/2P4P/1P2P1R1/P5P1/5qK1 w - - 0 25

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