It is white to move. White`s next move is decisive in bringing about a winning position.
At first glance it may seem that black should be able to sacrifice the rook for the white pawn while pushing his own pawn, thereby gaining a draw.
In the game I missed the best continuation and ended up with a draw.
I was not in time trouble, it was just a really bad mistake by me.
Can you see white`s best continuation? I will post the key move in the comments section.