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

Position

White: king b1; queen e1; rooks d1/h1; knights b2/e2; pawns a2/c3/d2/f4/g2/h2. Black: king g8; queen f6; rooks d3/d8; bishop a3; knight b3; pawns a7/b7/c7/e4/g7. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: axb3 — pawn a2→b3, captures knight. Now Black to move.
2. Best move: Bxb2 — bishop a3→b2, captures knight. Opponent replies Kxb2 (king b1→b2, captures bishop).
3. Best move: e3 — pawn e4→e3. Opponent replies dxe3 (pawn d2→e3, captures pawn).
4. Best move: Rxd1 — rook d3→d1, captures rook. Opponent replies Qxd1 (queen e1→d1, captures rook).
5. Best move: Rxd1 — rook d8→d1, captures queen.

Tactical themes

equality, middlegame, very long. The key move Bxb2 wins material.

Position data

FEN: 3r2k1/ppp3p1/5q2/8/4pP2/bnPr4/PN1PN1PP/1K1RQ2R w - - 0 25

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