Solution
76… g4+ 77. ♚g2 gxh3+ 78. ♚xh3 ♚e4 79. ♚g2 ♚e3 80. ♚f1 ♚f3
The position
This intermediate puzzle (rating 1683) 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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