Chess Puzzle #GfZVb — Intermediate, White to move, endgame

Position

White: king a2; queen g3; knight d5; pawns a3/b2/c4. Black: king h8; queen d7; rook e7; pawn h7. Material is balanced. White to move.

Solution (4 moves)

1. Opponent setup: Rg7 — rook e7→g7. Now White to move.
2. Best move: Qb8+ — queen g3→b8, gives check. Opponent replies Rg8 (rook g7→g8).
3. Best move: Qxg8+ — queen b8→g8, captures rook, gives check. Opponent replies Kxg8 (king h8→g8, captures queen).
4. Best move: Nf6+ — knight d5→f6, gives check. Opponent replies Kg7 (king g8→g7).
5. Best move: Nxd7 — knight f6→d7, captures queen.

Tactical themes

attraction, crushing, endgame, fork, sacrifice, very long. The key move Qxg8+ captures with check, forcing a response.

Position data

FEN: 7k/3qr2p/8/3N4/2P5/P5Q1/KP6/8 b - - 4 40

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