Chess Puzzle #63hbM — Advanced, White to move, middlegame

Position

White: king g1; rook b6; knight f3; pawns a6/b4/e5/g2/h4. Black: king f7; rooks b2/b3; pawns d5/e6/f5/g7/h6. Black is ahead by 2 points of material. White to move.

Solution (2 moves)

1. Opponent setup: Rxb4 — rook b3→b4, captures pawn. Now White to move.
2. Best move: a7 — pawn a6→a7. Opponent replies Rxb6 (rook b4→b6, captures rook).
3. Best move: a8=Q — pawn a7→a8, promotes to queen.

Tactical themes

advanced pawn, advantage, endgame, master, promotion, short. The key move is a7.

Position data

FEN: 8/5kp1/PR2p2p/3pPp2/1P5P/1r3N2/1r4P1/6K1 b - - 0 34

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