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

Position

White: king g1; queen d2; rooks a1/e1; bishop g2; knight e5; pawns a3/c4/d3/f2/g3/h4. Black: king f6; queen c7; rooks a8/f8; bishop b7; knight e7; pawns b5/b6/c5/d4/e6/f7/g6. Black is ahead by 1 point of material. White to move.

Solution (3 moves)

1. Opponent setup: Bxg2 — bishop b7→g2, captures bishop. Now White to move.
2. Best move: Ng4+ — knight e5→g4, gives check. Opponent replies Kg7 (king f6→g7).
3. Best move: Qh6+ — queen d2→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: r4r2/1bq1np2/1p2pkp1/1pp1N3/2Pp3P/P2P2P1/3Q1PB1/R3R1K1 b - - 1 23

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