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

Position

White: king h1; rook a1; bishops c1/c2; knights b1/d4; pawns a2/b2/c3/d3/d5. Black: king g8; rook f8; bishop h3; knight a5; pawns a7/c6/g3/h6/h7. White is ahead by 6 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: Nd2 — knight b1→d2. Now Black to move.
2. Best move: Rf1+ — rook f8→f1, gives check. Opponent replies Nxf1 (knight d2→f1, captures rook).
3. Best move: g2+ — pawn g3→g2, gives check. Opponent replies Kh2 (king h1→h2).
4. Best move: gxf1=Q — pawn g2→f1, captures knight, promotes to queen.

Tactical themes

advanced pawn, crushing, exposed king, fork, long, middlegame, promotion, sacrifice. The key move is Rf1+.

Position data

FEN: 5rk1/p6p/2p4p/n2P4/3N4/2PP2pb/PPB5/RNB4K w - - 1 25

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