Chess Puzzle #IG9Bn — Master, Black to move, middlegame

Position

White: king g1; queen b3; rooks a1/f1; bishop a7; knight d4; pawns a3/b4/c3/d3/e2/g3/h2. Black: king h8; queen d7; rook f8; bishop e3; knights f5/g6; pawns c7/d5/f6/g4. White is ahead by 5 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: Kg2 — king g1→g2. Now Black to move.
2. Best move: Ngh4+ — knight g6→h4, gives check. Opponent replies gxh4 (pawn g3→h4, captures knight).
3. Best move: Nxh4+ — knight f5→h4, captures pawn, gives check. Opponent replies Kh1 (king g2→h1).
4. Best move: g3 — pawn g4→g3.

Tactical themes

crushing, long, middlegame, sacrifice. The key move Nxh4+ captures with check, forcing a response.

Position data

FEN: 5r1k/B1pq4/5pn1/3p1n2/1P1N2p1/PQPPb1P1/4P2P/R4RK1 w - - 2 26

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