Chess Puzzle #PaeG3 — Expert, White to move, middlegame

Position

White: king c1; queen a8; bishop f4; pawns a2/b2/d4/g3. Black: king c6; queen g6; rook f5; pawns a5/c3/c4/f7/g7. Black is ahead by 3 points of material. White to move.

Solution (6 moves)

1. Opponent setup: Kb5 — king c6→b5. Now White to move.
2. Best move: Qb7+ — queen a8→b7, gives check. Opponent replies Ka4 (king b5→a4).
3. Best move: Qd7+ — queen b7→d7, gives check. Opponent replies Rb5 (rook f5→b5).
4. Best move: b3+ — pawn b2→b3, gives check. Opponent replies cxb3 (pawn c4→b3, captures pawn).
5. Best move: axb3+ — pawn a2→b3, captures pawn, gives check. Opponent replies Kb4 (king a4→b4).
6. Best move: Bd6+ — bishop f4→d6, gives check. Opponent replies Qxd6 (queen g6→d6, captures bishop).
7. Best move: Qxd6+ — queen d7→d6, captures queen, gives check.

Tactical themes

crushing, endgame, pin, very long. The key move axb3+ captures with check, forcing a response.

Position data

FEN: Q7/5pp1/2k3q1/p4r2/2pP1B2/2p3P1/PP6/2K5 b - - 2 33

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