Chess Puzzle #PWDQl — Expert, Black to move, middlegame

Position

White: king d2; queen b1; rooks g1/h1; bishop f5; knights c3/h4; pawns b5/c4/d5/e4/f2/g5. Black: king g7; queen e7; rooks a3/a8; bishop c8; knights b4/f8; pawns b6/c5/d6/e5/f4/g6. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Nxg6 — knight h4→g6, captures pawn. Now Black to move.
2. Best move: Nxg6 — knight f8→g6, captures knight. Opponent replies Bxg6 (bishop f5→g6, captures knight).
3. Best move: Kxg6 — king g7→g6, captures bishop. Opponent replies Qd1 (queen b1→d1).
4. Best move: Ra2+ — rook a3→a2, gives check. Opponent replies Nxa2 (knight c3→a2, captures rook).
5. Best move: Rxa2+ — rook a8→a2, captures knight, gives check.

Tactical themes

equality, exposed king, middlegame, very long. The key move Rxa2+ captures with check, forcing a response.

Position data

FEN: r1b2n2/4q1k1/1p1p2p1/1PpPpBP1/1nP1Pp1N/r1N5/3K1P2/1Q4RR w - - 2 42

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