Chess Puzzle #LGn3H — Advanced, White to move, middlegame

Position

White: king e1; queen h5; rooks a1/h1; knights a4/e5; pawns a2/b3/c2/d4/f2/g2/h2. Black: king f6; queen d8; rooks a8/h8; bishop f5; knights b8/e7; pawns a6/d5/e6/f7/g7/h7. Black is ahead by 2 points of material. White to move.

Solution (3 moves)

1. Opponent setup: g6 — pawn g7→g6. Now White to move.
2. Best move: Ng4+ — knight e5→g4, gives check. Opponent replies Kg7 (king f6→g7).
3. Best move: Qh6+ — queen h5→h6, gives check. Opponent replies Kg8 (king g7→g8).
4. Best move: Nf6# — knight g4→f6, delivers checkmate.

Tactical themes

long, mate, mate in 3, middlegame. The combination ends with Nf6# delivering checkmate.

Position data

FEN: rn1q3r/4nppp/p3pk2/3pNb1Q/N2P4/1P6/P1P2PPP/R3K2R b KQ - 2 14

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