Chess Puzzle #NwgsU — Expert, White to move, middlegame

Position

White: king h2; rook e8; pawns b5/c6/d7/g5/h4. Black: king g8; rook a8; bishop d5; pawns f2/g6/h7. Black is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: Kf7 — king g8→f7. Now White to move.
2. Best move: Rxa8 — rook e8→a8, captures rook. Opponent replies f1=Q (pawn f2→f1, promotes to queen).
3. Best move: Rf8+ — rook a8→f8, gives check. Opponent replies Kxf8 (king f7→f8, captures rook).
4. Best move: d8=Q+ — pawn d7→d8, promotes to queen, gives check. Opponent replies Kg7 (king f8→g7).
5. Best move: Qxd5 — queen d8→d5, captures bishop.

Tactical themes

advanced pawn, advantage, attraction, endgame, fork, promotion, very long. The key move Rxa8 wins material.

Position data

FEN: r3R1k1/3P3p/2P3p1/1P1b2P1/7P/8/5p1K/8 b - - 1 44

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