Chess Puzzle #j5ujX — Expert, Black to move, middlegame

Position

White: king f1; queen g4; rooks c1/h1; bishop e6; knight a4; pawns b3/b5/f2/g2/h3. Black: king e7; queen f6; rook a8; bishops b4/c6; knight d7; pawns a5/e4/h7. White is ahead by 4 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Rxc6 — rook c1→c6, captures bishop. Now Black to move.
2. Best move: Qa1+ — queen f6→a1, gives check. Opponent replies Ke2 (king f1→e2).
3. Best move: Qa2+ — queen a1→a2, gives check. Opponent replies Ke3 (king e2→e3).
4. Best move: Qd2+ — queen a2→d2, gives check. Opponent replies Kxe4 (king e3→e4, captures pawn).
5. Best move: Nf6+ — knight d7→f6, gives check.

Tactical themes

crushing, middlegame, very long. The key move is Qa1+.

Position data

FEN: r7/3nk2p/2b1Bq2/pP6/Nb2p1Q1/1P5P/5PP1/2R2K1R w - - 0 27

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