Chess Puzzle #iRMbM — Advanced, Black to move, middlegame

Position

White: king g1; queen g4; rooks a1/e4; bishops g3/h3; pawns a2/b3/c3/d4/e6/f2/g2. Black: king b8; queen h7; rooks e8/h8; bishop f8; knight d5; pawns a6/b7/c7. White is ahead by 4 points of material. Black to move.

Solution (2 moves)

1. Opponent setup: Rc1 — rook a1→c1. Now Black to move.
2. Best move: Nf6 — knight d5→f6. Opponent replies Qf5 (queen g4→f5).
3. Best move: Nxe4 — knight f6→e4, captures rook.

Tactical themes

equality, fork, middlegame, short. The key move is Nf6.

Position data

FEN: 1k2rb1r/1pp4q/p3P3/3n4/3PR1Q1/1PP3BB/P4PP1/R5K1 w - - 1 23

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