Chess Puzzle #HHhTw — Expert, White to move, opening

Position

White: king e1; queen h6; rooks a1/h1; knights c3/f3; pawns b2/b3/c2/d3/e4/f2/g2/h2. Black: king g8; queen d8; rooks a8/f8; bishops c8/e7; knight f6; pawns a6/b5/c7/d7/e5/f7/h7. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kh8 — king g8→h8. Now White to move.
2. Best move: Ng5 — knight f3→g5. Opponent replies d5 (pawn d7→d5).
3. Best move: Nxd5 — knight c3→d5, captures pawn. Opponent replies Bf5 (bishop c8→f5).
4. Best move: Nxe7 — knight d5→e7, captures bishop. Opponent replies Qxe7 (queen d8→e7, captures knight).
5. Best move: exf5 — pawn e4→f5, captures bishop.

Tactical themes

advantage, middlegame, very long. The key move is Ng5.

Position data

FEN: r1bq1rk1/2ppbp1p/p4n1Q/1p2p3/4P3/1PNP1N2/1PP2PPP/R3K2R b KQ - 0 12

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