Solution
50. ♛c4+ ♛xc4+ 51. ♚xc4 ♚a5 52. ♚c5 ♚a6 53. ♚c6
The position
This advanced puzzle (rating 1833) asks White to move to find the winning idea. It features these themes: Queen Endgame.
It is White to move. Look for the tactic hiding in the position — Queen Endgame. Drag a piece on the board to play your move; the puzzle will tell you if you found the best continuation.
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