Chess Puzzle #puv0r — Expert, Black to move, middlegame

Position

White: king c1; rooks d1/f1; bishop d2; knight e4; pawns g5/h6. Black: king g8; rooks b2/d3; pawns a3/a7/c4/d4/g6/h7. White is ahead by 2 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Nc5 — knight e4→c5. Now Black to move.
2. Best move: c3 — pawn c4→c3. Opponent replies Nxd3 (knight c5→d3, captures rook).
3. Best move: a2 — pawn a3→a2. Opponent replies Nxb2 (knight d3→b2, captures rook).
4. Best move: a1=Q+ — pawn a2→a1, promotes to queen, gives check. Opponent replies Kc2 (king c1→c2).
5. Best move: Qxb2+ — queen a1→b2, captures knight, gives check.

Tactical themes

advanced pawn, advantage, endgame, exposed king, promotion, sacrifice, very long. The key move Qxb2+ captures with check, forcing a response.

Position data

FEN: 6k1/p6p/6pP/6P1/2ppN3/p2r4/1r1B4/2KR1R2 w - - 1 34

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