Chess Puzzle #GizS1 — Expert, White to move, middlegame

Position

White: king h3; queen e5; bishop a2; pawns a3/e6/g4/h4. Black: king h8; queen e7; rook d6; pawns a7/g5/h6. Black is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: Kg8 — king h8→g8. Now White to move.
2. Best move: Qxd6 — queen e5→d6, captures rook. Opponent replies Qxd6 (queen e7→d6, captures queen).
3. Best move: e7+ — pawn e6→e7, gives check. Opponent replies Kh7 (king g8→h7).
4. Best move: Bb1+ — bishop a2→b1, gives check. Opponent replies Kg7 (king h7→g7).
5. Best move: e8=N+ — pawn e7→e8, promotes to knight, gives check.

Tactical themes

advanced pawn, crushing, discovered attack, endgame, exposed king, promotion, sacrifice, underpromotion, very long. The key move Qxd6 wins material.

Position data

FEN: 7k/p3q3/3rP2p/4Q1p1/6PP/P6K/B7/8 b - - 1 45

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