Chess Puzzle #49lmi — Advanced, White to move, endgame

Position

White: king a6; queen e8; pawns a5/b6. Black: king g7; queen f5; pawns f7/g6/h3. Black is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: Qe6 — queen f5→e6. Now White to move.
2. Best move: Qxe6 — queen e8→e6, captures queen. Opponent replies fxe6 (pawn f7→e6, captures queen).
3. Best move: b7 — pawn b6→b7. Opponent replies h2 (pawn h3→h2).
4. Best move: b8=Q — pawn b7→b8, promotes to queen. Opponent replies h1=Q (pawn h2→h1, promotes to queen).
5. Best move: Qb7+ — queen b8→b7, gives check.

Tactical themes

advanced pawn, crushing, endgame, promotion, queen endgame, very long. The key move Qxe6 wins material.

Position data

FEN: 4Q3/5pk1/KP4p1/P4q2/8/7p/8/8 b - - 0 67

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