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

Position

White: king c1; queen d2; rooks d1/h8; bishops e3/g6; knight c3; pawns a4/b5/c2/d4/e5/f2/g2. Black: king f8; queen d8; rook a8; bishops d7/e7; knights a7/g8; pawns a5/b7/c6/d5/e6/g4/g5. White is ahead by 2 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: b6 — pawn b5→b6. Now Black to move.
2. Best move: Ba3+ — bishop e7→a3, gives check. Opponent replies Kb1 (king c1→b1).
3. Best move: Qxb6+ — queen d8→b6, captures pawn, gives check. Opponent replies Nb5 (knight c3→b5).
4. Best move: Nxb5 — knight a7→b5, captures knight.

Tactical themes

advantage, long, middlegame. The key move Qxb6+ captures with check, forcing a response.

Position data

FEN: r2q1knR/np1bb3/2p1p1B1/pP1pP1p1/P2P2p1/2N1B3/2PQ1PP1/2KR4 w - - 0 20

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