Hi guys, these days all the tourneys in Greece are cancelled because of coronovirus. So i continue to train a little bit at lichess by playing some rapid games and simuls.

First of all i played with a greek player of 2080 rated system 3+2 and i won him 4-1 and at the game i lost k was totally winning. Before some hours i played with an FM a rapid game and we reached at an interesting Endgame where I was black and i was pressing   . The position at the cover photo is this position. What must play the white to achieve draw?

He played f5 and achieved draw