Chess Puzzle #QTMSw — Expert, Black to move, endgame

Position

White: king g1; queen f4; knight h2; pawns d5/e3/f2. Black: king h7; queen h3; bishop g4; pawns b2/f5/g7. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Qb4 — queen f4→b4. Now Black to move.
2. Best move: Bf3 — bishop g4→f3. Opponent replies Nxf3 (knight h2→f3, captures bishop).
3. Best move: Qg4+ — queen h3→g4, gives check. Opponent replies Qxg4 (queen b4→g4, captures queen).
4. Best move: b1=Q+ — pawn b2→b1, promotes to queen, gives check. Opponent replies Kg2 (king g1→g2).
5. Best move: fxg4 — pawn f5→g4, captures queen.

Tactical themes

advanced pawn, clearance, crushing, deflection, endgame, fork, intermezzo, promotion, sacrifice, very long. The key move is Bf3.

Position data

FEN: 8/6pk/8/3P1p2/5Qb1/4P2q/1p3P1N/6K1 w - - 0 42

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