Chess Puzzle #NCReb — Expert, White to move, middlegame

Position

White: king g1; queen b7; rook b1; pawns a3/c5/d3/f2/g2/h2. Black: king c8; queen a1; rooks e5/e8; knight f6; pawns a6/c7/g7/h7. Black is ahead by 6 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kd7 — king c8→d7. Now White to move.
2. Best move: c6+ — pawn c5→c6, gives check. Opponent replies Kd8 (king d7→d8).
3. Best move: Qb8+ — queen b7→b8, gives check. Opponent replies Ke7 (king d8→e7).
4. Best move: Qb4+ — queen b8→b4, gives check. Opponent replies Kf7 (king e7→f7).
5. Best move: Rxa1 — rook b1→a1, captures queen.

Tactical themes

advantage, endgame, very long. The key move is c6+.

Position data

FEN: 2k1r3/1Qp3pp/p4n2/2P1r3/8/P2P4/5PPP/qR4K1 b - - 0 29

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