Chess Puzzle #oV8vJ — Master, Black to move, endgame

Position

White: king g1; queen e8; pawns a2/g2/h3. Black: king d5; rook d4; pawns a7/b7/c2/d2. White is ahead by 3 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Qd8+ — queen e8→d8, gives check. Now Black to move.
2. Best move: Kc6 — king d5→c6. Opponent replies Qe8+ (queen d8→e8, gives check).
3. Best move: Kb6 — king c6→b6. Opponent replies Qe6+ (queen e8→e6, gives check).
4. Best move: Ka5 — king b6→a5. Opponent replies Qe5+ (queen e6→e5, gives check).
5. Best move: Ka6 — king a5→a6.

Tactical themes

crushing, defensive move, endgame, queen rook endgame, very long. The key move is Kc6.

Position data

FEN: 4Q3/pp6/8/3k4/3r4/7P/P1pp2P1/6K1 w - - 2 46

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