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

Position

White: king g1; rook e6; bishop e2; pawns a7/e4/f3/g2/h3. Black: king f4; rook a2; knight d3; pawns f6/g5/h4. White is ahead by 2 points of material. White to move.

Solution (3 moves)

1. Opponent setup: Rxe2 — rook a2→e2, captures bishop. Now White to move.
2. Best move: a8=Q — pawn a7→a8, promotes to queen. Opponent replies Kg3 (king f4→g3).
3. Best move: Qb8+ — queen a8→b8, gives check. Opponent replies Nf4 (knight d3→f4).
4. Best move: Kf1 — king g1→f1.

Tactical themes

advanced pawn, advantage, endgame, long, pin, promotion. The key move is a8=Q.

Position data

FEN: 8/P7/4Rp2/6p1/4Pk1p/3n1P1P/r3B1P1/6K1 b - - 18 46

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