Chess Puzzle #5PafP — Advanced, Black to move, middlegame

Position

White: king g1; queen f1; rooks c1/d1; bishop e3; pawns a3/b3/e5/f2/g2. Black: king h8; queen g4; rook g6; bishop h3; knight e4; pawns a6/c7/g7/h5. White is ahead by 3 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: f3 — pawn f2→f3. Now Black to move.
2. Best move: Qxg2+ — queen g4→g2, captures pawn, gives check. Opponent replies Qxg2 (queen f1→g2, captures queen).
3. Best move: Rxg2+ — rook g6→g2, captures queen, gives check. Opponent replies Kf1 (king g1→f1).
4. Best move: Ng3+ — knight e4→g3, gives check. Opponent replies Ke1 (king f1→e1).
5. Best move: Re2# — rook g2→e2, delivers checkmate.

Tactical themes

mate, mate in 4, middlegame, very long. The combination ends with Re2# delivering checkmate.

Position data

FEN: 7k/2p3p1/p5r1/4P2p/4n1q1/PP2B2b/5PP1/2RR1QK1 w - - 0 30

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