1. f6 gxf6
2. Kxf6 h5!
If now 3. gxh5, the new h-pawn cannot promote, so a draw was agreed.
But let's look at the other possible move for Black (2... Kh7), which leads to some interesting complications which might be difficult to find across the board:
3. Kf7 Kh8
4. Kg6 h5 (the only move to survive)
5. Kxh5 Kh7 (opposition, and a draw)
If instead 5. g5, then NOT ...h4??, since 6. Kf7 h3 is a clear win for White.
So after 5. g5, Black saves the game with ...Kg8! Then if 6. Kxh5 Kg7 draws.
A good and mature save by Anita Somton.