Chess Puzzle #BONrj — Intermediate, Black to move, opening

Position

White: king e1; queen e2; rooks a1/h1; bishops b3/c1; knight b1; pawns a2/b2/c3/d2/e4/f2/g2/h2. Black: king e8; queen f6; rooks a8/h8; bishops c8/d6; knight h6; pawns a7/b5/c6/d7/f7/g7/h7. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: O-O — king e1→g1. Now Black to move.
2. Best move: Bxh2+ — bishop d6→h2, captures pawn, gives check. Opponent replies Kxh2 (king g1→h2, captures bishop).
3. Best move: Qh4+ — queen f6→h4, gives check. Opponent replies Kg1 (king h2→g1).
4. Best move: Ng4 — knight h6→g4. Opponent replies Qxg4 (queen e2→g4, captures knight).
5. Best move: Qxg4 — queen h4→g4, captures queen.

Tactical themes

advantage, attraction, kingside attack, opening, sacrifice, very long. The key move Bxh2+ captures with check, forcing a response.

Position data

FEN: r1b1k2r/p2p1ppp/2pb1q1n/1p6/4P3/1BP5/PP1PQPPP/RNB1K2R w KQkq - 3 11

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