Looking forward to a nice study


And if black uses his pawn white will always promote sooner cause black needs to get rid of the c-pawn loosing him a move.

I guess that is a draw. Therefore I think that white has to do the same Blocking method on c5 so that the e pawn can not be met by Kd4
That is why I think this is the solution:

Yes, it is solved! Endgame books say a queen will win against a bishop pawn on the 6th rank, but here is an exception. Earlier if White had played 2. Kf6, White would again get a queen against a bishop pawn on the 6th rank, and again it would only draw, because the queen on d8 (after a check) would be blocked by the king on f6.
This is a 1981 study by M. Zinar.
If you want to solve another one, the following is quite interesting, but it may be one you already know.
White to play and win.

The problem is that after Nc7 Kf6 Nd6+ is that after black takes white's knight white will be in check.
So if white moves away from the action it should be some idea like that. I think I have seen a problem where the king went to a3, but I don't remember the lines. Maybe this was the problem.

This may be the problem because the only winning move is Ka3. Do you remember the next move after 1. Ka3 Kc6?