Chess Puzzle #wXPpG — Expert, Black to move, middlegame

Position

White: king b1; queen c7; rooks d1/g1; bishop e4; knights d5/f3; pawns a2/b3/e3/g2/h3. Black: king h8; queen a3; rooks b8/f8; bishop a4; knight g3; pawns e5/g7/h7. White is ahead by 5 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Qe7 — queen c7→e7. Now Black to move.
2. Best move: Rxb3+ — rook b8→b3, captures pawn, gives check. Opponent replies axb3 (pawn a2→b3, captures rook).
3. Best move: Qxb3+ — queen a3→b3, captures pawn, gives check. Opponent replies Ka1 (king b1→a1).
4. Best move: Ra8 — rook f8→a8. Opponent replies Qd8+ (queen e7→d8, gives check).
5. Best move: Rxd8 — rook a8→d8, captures queen.

Tactical themes

crushing, middlegame, queenside attack, quiet move, sacrifice, very long. The key move Rxb3+ captures with check, forcing a response.

Position data

FEN: 1r3r1k/2Q3pp/8/3Np3/b3B3/qP2PNnP/P5P1/1K1R2R1 w - - 3 25

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