The bots are surprisingly good, as far as bots go, but they have some strange tendencies as well, such as never using trump if they have a protected left, and even playing off if they play last, and could safely trump and take the trick. They also seem to lead low if they have a tripleton ace, at least I think that's the case, I have seen them lead low, and then also have the ace later in the hand. Now, they do understand the value of leading trump from 3rd seat, though, so that alone puts them ahead of quite a few people.