Chess Puzzle #elAja — Advanced, Black to move, endgame

Position

White: king c3; queen d6; pawns a2/d5/f4/h4. Black: king h7; queen a3; pawns c5/f6/g6. White is ahead by 1 point of material. Black to move.

Solution (3 moves)

1. Opponent setup: Kc4 — king c3→c4. Now Black to move.
2. Best move: Qb4+ — queen a3→b4, gives check. Opponent replies Kd3 (king c4→d3).
3. Best move: c4+ — pawn c5→c4, gives check. Opponent replies Ke3 (king d3→e3).
4. Best move: Qxd6 — queen b4→d6, captures queen.

Tactical themes

crushing, discovered attack, endgame, long, master, queen endgame. The key move is Qb4+.

Position data

FEN: 8/7k/3Q1pp1/2pP4/5P1P/q1K5/P7/8 w - - 6 50

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