Often the best moves that comes in chess comes from looking several moves into the future, moves that might look bad right now but are best in the future.
In the 3 v 3 Pawn Endgames we have to pay a lot of attention to this.
Black has only one pawn move that doesn't lose - which move is it?
Black played g6 before White, preventing a passed pawn. Now let's make the correct recapture for Black.
Black keeps the pawn structure symmetrical, so White cannot force a passed pawn.