Chess Puzzle #4JsO1 — Advanced, White to move, middlegame

Position

White: king h1; queen d5; rooks b1/f1; pawns a2/c4/e4/g3/h2. Black: king e6; queen g7; rooks c8/g5; knight d8; pawns a7/c5/d6/e5/g4. Black is ahead by 3 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Ke7 — king e6→e7. Now White to move.
2. Best move: Rb7+ — rook b1→b7, gives check. Opponent replies Nxb7 (knight d8→b7, captures rook).
3. Best move: Qxb7+ — queen d5→b7, captures knight, gives check. Opponent replies Kd8 (king e7→d8).
4. Best move: Rf7 — rook f1→f7. Opponent replies Qxf7 (queen g7→f7, captures rook).
5. Best move: Qxf7 — queen b7→f7, captures queen.

Tactical themes

crushing, fork, middlegame, sacrifice, very long. The key move Qxb7+ captures with check, forcing a response.

Position data

FEN: 2rn4/p5q1/3pk3/2pQp1r1/2P1P1p1/6P1/P6P/1R3R1K b - - 1 33

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