Chess Puzzle #UKwOW — Master, White to move, endgame

Position

White: king f1; rook g7; pawn b6. Black: king f3; knights e2/e4; pawn g3. Black is ahead by 1 point of material. White to move.

Solution (6 moves)

1. Opponent setup: Nf4 — knight e2→f4. Now White to move.
2. Best move: b7 — pawn b6→b7. Opponent replies g2+ (pawn g3→g2, gives check).
3. Best move: Kg1 — king f1→g1. Opponent replies Ne2+ (knight f4→e2, gives check).
4. Best move: Kh2 — king g1→h2. Opponent replies g1=Q+ (pawn g2→g1, promotes to queen, gives check).
5. Best move: Rxg1 — rook g7→g1, captures queen. Opponent replies Nxg1 (knight e2→g1, captures rook).
6. Best move: Kxg1 — king h2→g1, captures knight. Opponent replies Nc5 (knight e4→c5).
7. Best move: b8=Q — pawn b7→b8, promotes to queen.

Tactical themes

advanced pawn, crushing, defensive move, endgame, promotion, very long. The key move is b7.

Position data

FEN: 8/6R1/1P6/8/4n3/5kp1/4n3/5K2 b - - 2 70

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