king activity matters.
Winning opposite color bishops endgame by zugzwang!

Cool zugzwang. He pretty much walked into that one.
8.Bxd5 Was there some reason you didn't want the pawn?
19.Rxf6 Why did you move the Queen before capturing? That was easily the game winner there.
Rare win ???? ...or blunder by Black. Play ( 37 )....Bd6 instead of Bc7...and if Kxa7...then Kc7 for Black holding that position. Draw

Rare win ???? ...or blunder by Black. Play ( 37 )....Bd6 instead of Bc7...and if Kxa7...then Kc7 for Black holding that position. Draw
There were other blunders, as the first posters mentioned. Obviously winning from a dead drawn position is impossible without one party making a mistake.
This time however the mistake itself seems rather intersting.
That's rare!