Again, I didn't write this, but in general, to take a chess engine and apply to another game the main things you'd have to change are the board representation, and you'd have to retrain the neural net(likely redesign it as well). The tree search should work assuming the game you're going to is also a perfect information, minimax game. Though it could also work for other games. There's a good chance there's prior work on applying bitboards(board representation) on whichever game that is. Chessprogrammingwiki is an invaluable resource for information about how engines like this work. Godspeed.