Chess Puzzle #iiZR8 — Master, Black to move, middlegame

Position

White: king c2; queen e4; rook e2; knight h2; pawns c3/e5/f4/g2/g3. Black: king b8; queen a3; rook d8; pawns a7/b7/c7/g4/h5. White is ahead by 3 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Qb4 — queen e4→b4. Now Black to move.
2. Best move: Qa2+ — queen a3→a2, gives check. Opponent replies Qb2 (queen b4→b2).
3. Best move: Qd5 — queen a2→d5. Opponent replies Kb1 (king c2→b1).
4. Best move: Qd1+ — queen d5→d1, gives check. Opponent replies Ka2 (king b1→a2).
5. Best move: Qa4+ — queen d1→a4, gives check.

Tactical themes

crushing, endgame, very long. The key move is Qa2+.

Position data

FEN: 1k1r4/ppp5/8/4P2p/4QPp1/q1P3P1/2K1R1PN/8 w - - 0 30

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