Chess Puzzle #EHyMk — Advanced, White to move, endgame

Position

White: king g5; rook f3; pawn g7. Black: king c3; queen b1; pawn d5. Black is ahead by 4 points of material. White to move.

Solution (3 moves)

1. Opponent setup: Kd4 — king c3→d4. Now White to move.
2. Best move: Rf4+ — rook f3→f4, gives check. Opponent replies Kc5 (king d4→c5).
3. Best move: g8=Q — pawn g7→g8, promotes to queen. Opponent replies Qg1+ (queen b1→g1, gives check).
4. Best move: Rg4 — rook f4→g4.

Tactical themes

advanced pawn, crushing, endgame, long, promotion, queen rook endgame. The key move is Rf4+.

Position data

FEN: 8/6P1/8/3p2K1/8/2k2R2/8/1q6 b - - 1 57

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