If you don't want to watch the video, or want to use Lichess to check the variations, I've put the solution here :
Based on :
en.chessbase.com/post/mario-matous-19472013-171013Proves Humans are better than engines
I found a much simpler win, I don't even know how you think to do that and I know so many steps ahead that you'll come out on top.
In an Italian book I have another position in which engines do not find the solution. Later I try to post it.
I thought I had posted the same puzzle / composition by OP in the Lichess forums years ago, but someone else did :
lichess.org/forum/game-analysis/the-mighty-gajah#1