Solution
53… ♜g4+ 54. ♚f3 d4 55. ♜xc4 dxe3
The position
This advanced puzzle (rating 1886) asks Black to move to find the winning idea. It features these themes: Rook Endgame, Fork.
It is Black to move. Look for the tactic hiding in the position — Rook Endgame, Fork. 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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