Solution
51… g4 52. ♚b1 ♚h3 53. ♚c1 g3 54. ♚d2 g2
The position
This advanced puzzle (rating 1975) asks Black to move to find the winning idea. It features these themes: Rook Endgame.
It is Black to move. Look for the tactic hiding in the position — Rook 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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