1. Rg1+ The only winning move. Txf5? or exf5? leads to a draw after Ta7+ 1... Kh7 2. e5! Rxe5+ 3. Kf7 threatens mate on the move. 3... Kh6 4. Kf6! threatens mate again or wins the rook. 1-0 [Kjell Persson]