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

Position

White: king g1; queen g3; bishop b3; knight e7; pawns a5/c3/d6/f2/g2/h4. Black: king h8; queen f8; rook d8; bishop b5; pawns a6/d3/e5/f6/g7/h5. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Be8 — bishop b5→e8. Now White to move.
2. Best move: Ng6+ — knight e7→g6, gives check. Opponent replies Bxg6 (bishop e8→g6, captures knight).
3. Best move: Qxg6 — queen g3→g6, captures bishop. Opponent replies Qe8 (queen f8→e8).
4. Best move: Bf7 — bishop b3→f7. Opponent replies Qxf7 (queen e8→f7, captures bishop).
5. Best move: Qxf7 — queen g6→f7, captures queen.

Tactical themes

crushing, endgame, fork, very long. The key move is Ng6+.

Position data

FEN: 3r1q1k/4N1p1/p2P1p2/Pb2p2p/7P/1BPp2Q1/5PP1/6K1 b - - 3 34

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