Chess Puzzle #NAgoD — Advanced, Black to move, endgame

Position

White: king h3; queen g8; pawns a2/b3/g5. Black: king e5; queen f5; pawns a7/b6/e6. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Kh4 — king h3→h4. Now Black to move.
2. Best move: Kf4 — king e5→f4. Opponent replies Kh5 (king h4→h5).
3. Best move: Qg4+ — queen f5→g4, gives check. Opponent replies Kh6 (king h5→h6).
4. Best move: Qh4+ — queen g4→h4, gives check. Opponent replies Kg7 (king h6→g7).
5. Best move: Qxg5+ — queen h4→g5, captures pawn, gives check.

Tactical themes

crushing, deflection, endgame, queen endgame, very long. The key move Qxg5+ captures with check, forcing a response.

Position data

FEN: 6Q1/p7/1p2p3/4kqP1/8/1P5K/P7/8 w - - 10 45

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