Chess Puzzle #GUA86 — Advanced, White to move, endgame

Position

White: king g1; queen b6; pawns b5/c5/e4/g2/g5. Black: king h7; queen g7; knight d3; pawns e5/g6. Material is balanced. White to move.

Solution (3 moves)

1. Opponent setup: Qd7 — queen g7→d7. Now White to move.
2. Best move: c6 — pawn c5→c6. Opponent replies Qg4 (queen d7→g4).
3. Best move: Qc7+ — queen b6→c7, gives check. Opponent replies Kg8 (king h7→g8).
4. Best move: Qd8+ — queen c7→d8, gives check.

Tactical themes

crushing, endgame, long. The key move is c6.

Position data

FEN: 8/6qk/1Q4p1/1PP1p1P1/4P3/3n4/6P1/6K1 b - - 0 35

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