do you mean TREE(3)? the funny thing about this game is that you can't really search up a solution, because so few people talk about the weak tree function, which I guess is what this game is bringing awareness to.
Here's the solution for weak tree(3) that helped me find a similar solution in my game: https://math.stackexchange.com/questions/3837501/before-the-current-lower-bound-... (Oh, and I should also credit my younger brother, who told me about this problem in the first place. He was already familiar with this solution, which helped me test the game initially.)