Chess Puzzle #ObgtX — Advanced, White to move, middlegame

Position

White: king g1; rook c1; knight c5; pawns a4/c4/e6/g2/h4. Black: king g7; rooks b4/f4; pawns a6/c7/f7/g6/h6. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Rfxc4 — rook f4→c4, captures pawn. Now White to move.
2. Best move: Rxc4 — rook c1→c4, captures rook. Opponent replies Rxc4 (rook b4→c4, captures rook).
3. Best move: e7 — pawn e6→e7. Opponent replies Rc1+ (rook c4→c1, gives check).
4. Best move: Kf2 — king g1→f2. Opponent replies Rxc5 (rook c1→c5, captures knight).
5. Best move: e8=Q — pawn e7→e8, promotes to queen.

Tactical themes

advanced pawn, advantage, endgame, promotion, very long. The key move Rxc4 wins material.

Position data

FEN: 8/2p2pk1/p3P1pp/2N5/PrP2r1P/8/6P1/2R3K1 b - - 0 39

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