how to defeat maximum bot without using stocfish or any custom match.
You could search online how people beated it (like I believe Alexander Bortnyk defeated it, maybe I'm wrong) and just copy moves, if it plays differently just play again. Statisticaly bot will play the same way again at some point (if chesscom did not change comodo since then, probably not). The only problem is that this will take a lot of time. A LOT OF TIME.