Chess Puzzle #GSZqB — Advanced, White to move, middlegame

Position

White: king c1; queen b4; rook d1; bishop c3; knight g1; pawns a2/b2/c2/d3/f3/h2. Black: king e8; queen d8; rooks a8/h8; bishop h1; knight b8; pawns a7/c7/e5/f7/g7/h7. Black is ahead by 5 points of material. White to move.

Solution (3 moves)

1. Opponent setup: Qd6 — queen d8→d6. Now White to move.
2. Best move: Qb7 — queen b4→b7. Opponent replies O-O (king e8→g8).
3. Best move: Qxa8 — queen b7→a8, captures rook. Opponent replies Nc6 (knight b8→c6).
4. Best move: Qb7 — queen a8→b7.

Tactical themes

equality, long, middlegame, trapped piece. The key move is Qb7.

Position data

FEN: rn1qk2r/p1p2ppp/8/4p3/1Q6/2BP1P2/PPP4P/2KR2Nb b kq - 0 12

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