Chess Puzzle #QKs7z — Master, White to move, middlegame

Position

White: king g1; queen b1; rooks b5/f1; bishop d3; knight b3; pawns a2/c2/e3/f2/g2/h2. Black: king c8; queen d6; rooks c7/h8; bishop g4; knights c6/e7; pawns a7/d5/f7/g7/h7. Black is ahead by 2 points of material. White to move.

Solution (3 moves)

1. Opponent setup: Rb7 — rook c7→b7. Now White to move.
2. Best move: Rxb7 — rook b5→b7, captures rook. Opponent replies Kxb7 (king c8→b7, captures rook).
3. Best move: Na5+ — knight b3→a5, gives check. Opponent replies Kc7 (king b7→c7).
4. Best move: Qb7+ — queen b1→b7, gives check.

Tactical themes

advantage, attraction, double check, exposed king, long, middlegame, queenside attack. The key move Rxb7 wins material.

Position data

FEN: 2k4r/p1r1nppp/2nq4/1R1p4/6b1/1N1BP3/P1P2PPP/1Q3RK1 b - - 1 19

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