Chess Puzzle #0hJn1 — Intermediate, Black to move, endgame

Position

White: king a5; queen g6; pawn a3. Black: king g2; queen g3; pawn h6. Material is balanced. Black to move.

Solution (6 moves)

1. Opponent setup: Qxg3+ — queen g6→g3, captures queen, gives check. Now Black to move.
2. Best move: Kxg3 — king g2→g3, captures queen. Opponent replies a4 (pawn a3→a4).
3. Best move: h5 — pawn h6→h5. Opponent replies Ka6 (king a5→a6).
4. Best move: h4 — pawn h5→h4. Opponent replies a5 (pawn a4→a5).
5. Best move: h3 — pawn h4→h3. Opponent replies Kb7 (king a6→b7).
6. Best move: h2 — pawn h3→h2. Opponent replies a6 (pawn a5→a6).
7. Best move: h1=Q+ — pawn h2→h1, promotes to queen, gives check.

Tactical themes

advanced pawn, crushing, endgame, promotion, quiet move, very long. The key move Kxg3 wins material.

Position data

FEN: 8/8/6Qp/K7/8/P5q1/6k1/8 w - - 13 68

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