Chess Puzzle #QsFwL — Expert, Black to move, opening

Position

White: king g1; queen b3; rooks a1/d1; bishops a2/a5; knights d5/f3; pawns a3/b2/d4/e3/f2/g2/h2. Black: king g8; queen h5; rooks d8/e8; bishops b7/d6; knight e4; pawns a6/b5/c7/f7/g7/h7. White is ahead by 4 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Bxc7 — bishop a5→c7, captures pawn. Now Black to move.
2. Best move: Bxd5 — bishop b7→d5, captures knight. Opponent replies Qxd5 (queen b3→d5, captures bishop).
3. Best move: Bxh2+ — bishop d6→h2, captures pawn, gives check. Opponent replies Bxh2 (bishop c7→h2, captures bishop).
4. Best move: Rxd5 — rook d8→d5, captures queen. Opponent replies Bxd5 (bishop a2→d5, captures rook).
5. Best move: Qxd5 — queen h5→d5, captures bishop.

Tactical themes

discovered attack, equality, kingside attack, middlegame, very long. The key move Bxh2+ captures with check, forcing a response.

Position data

FEN: 3rr1k1/1bp2ppp/p2b4/Bp1N3q/3Pn3/PQ2PN2/BP3PPP/R2R2K1 w - - 3 20

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