Chess Puzzle #LaZ0x — Expert, White to move, middlegame

Position

White: king f2; queen h8; bishop d2; pawns a4/b2/c3/d4/e5. Black: king e8; queen e4; rook f5; bishop d7; pawns a6/b7/c7/d5/e6/f3. Black is ahead by 6 points of material. White to move.

Solution (7 moves)

1. Opponent setup: Ke7 — king e8→e7. Now White to move.
2. Best move: Bg5+ — bishop d2→g5, gives check. Opponent replies Rxg5 (rook f5→g5, captures bishop).
3. Best move: Qf6+ — queen h8→f6, gives check. Opponent replies Ke8 (king e7→e8).
4. Best move: Qh8+ — queen f6→h8, gives check. Opponent replies Kf7 (king e8→f7).
5. Best move: Qf6+ — queen h8→f6, gives check. Opponent replies Kg8 (king f7→g8).
6. Best move: Qxg5+ — queen f6→g5, captures rook, gives check. Opponent replies Kh7 (king g8→h7).
7. Best move: Qe7+ — queen g5→e7, gives check. Opponent replies Kg6 (king h7→g6).
8. Best move: Qf6+ — queen e7→f6, gives check.

Tactical themes

endgame, equality, fork, sacrifice, very long. The key move Qxg5+ captures with check, forcing a response.

Position data

FEN: 4k2Q/1ppb4/p3p3/3pPr2/P2Pq3/2P2p2/1P1B1K2/8 b - - 4 37

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