This is the best puzzle I've ever seen. So tricky and deep, a lot to learn from it.

I haven't run it through an engine, but White is very clearly winning. Black has no threats left and cannot keep the white king from advancing, pushing the h-pawn is easily deflected by White.

Fun puzzle.

that is kinda hard

See post #151 and #209 as I gave the original account of the game and then offered 2 puzzles one with the original ending position and the other with the B on e5 that you also thought of.  What I don't understand is how do you think that B on g5 is a mistake?

Black has no more threats and can only move his K to f5 or Pawn to h4. Neither of these moves advances Blacks position as there is never a threat of Black promoting either the g or h pawn.

Because this thread had gone 'cold', I didn't bother to keep my original analysis & can't remember exactly what I was thinking but I seem to have got stuck in a 'thinking knot' on this one & didn't see the best moves!

Here's a rough reproduction of what (I think) I was thinking..

It's much clearer to me now & obviously a win for White whatever Black plays.

The more I look at that, the more I think I must have been having a bad day!

very good

a