Chess Puzzle #Vyr5V — Expert, Black to move, middlegame

Position

White: king e2; queen b2; bishop e3; pawns d4/f5/g3/h2. Black: king g8; queen c4; pawns a4/b3/g7/h6. White is ahead by 3 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kd1 — king e2→d1. Now Black to move.
2. Best move: a3 — pawn a4→a3. Opponent replies Qxa3 (queen b2→a3, captures pawn).
3. Best move: Qc2+ — queen c4→c2, gives check. Opponent replies Ke1 (king d1→e1).
4. Best move: b2 — pawn b3→b2. Opponent replies Qxb2 (queen a3→b2, captures pawn).
5. Best move: Qxb2 — queen c2→b2, captures queen.

Tactical themes

advanced pawn, crushing, endgame, exposed king, very long. The key move is a3.

Position data

FEN: 6k1/6p1/7p/5P2/p1qP4/1p2B1P1/1Q2K2P/8 w - - 2 49

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