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

Position

White: king e2; queen a6; rooks e1/e6; pawns a2/b2/c2/d4/h2. Black: king g8; queen g2; rook f3; bishop h5; pawns c6/d5/g7/h7. White is ahead by 3 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kd1 — king e2→d1. Now Black to move.
2. Best move: Rd3+ — rook f3→d3, gives check. Opponent replies Kc1 (king d1→c1).
3. Best move: Qd2+ — queen g2→d2, gives check. Opponent replies Kb1 (king c1→b1).
4. Best move: Qd1+ — queen d2→d1, gives check. Opponent replies Rxd1 (rook e1→d1, captures queen).
5. Best move: Rxd1# — rook d3→d1, captures rook, delivers checkmate.

Tactical themes

back rank mate, double check, endgame, mate, mate in 4, sacrifice, very long. The combination ends with Rxd1# delivering checkmate.

Position data

FEN: 6k1/6pp/Q1p1R3/3p3b/3P4/5r2/PPP1K1qP/4R3 w - - 2 33

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