Chess Puzzle #yM9JM — Master, White to move, middlegame

Position

White: king g1; queen d4; knight e5; pawns b6/c4/f3/g2/h3. Black: king h8; queen f6; rook f8; bishop a4; pawns g6/h7. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Be8 — bishop a4→e8. Now White to move.
2. Best move: b7 — pawn b6→b7. Opponent replies Bc6 (bishop e8→c6).
3. Best move: Nxg6+ — knight e5→g6, captures pawn, gives check. Opponent replies Kg7 (king h8→g7).
4. Best move: Qxf6+ — queen d4→f6, captures queen, gives check. Opponent replies Rxf6 (rook f8→f6, captures queen).
5. Best move: b8=Q — pawn b7→b8, promotes to queen.

Tactical themes

advanced pawn, advantage, discovered attack, endgame, pin, promotion, very long. The key move Nxg6+ captures with check, forcing a response.

Position data

FEN: 5r1k/7p/1P3qp1/4N3/b1PQ4/5P1P/6P1/6K1 b - - 0 45

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