Play euchre against ai bots
Euchre is a card game where you and a partner try to take more tricks than the opponent team. The game is two phases. In the first, trump is decided. In the second, cards are played to take tricks

For an overview of the rules, see Wikipedia: Euchre

Optionally play with a friend
You can play with a friend against the ai bots by sharing the url after you create a game. If you play alone, you'll get an ai agent as a teammate.

Bots use counter factual regret minimization (CFR) and perfect information monte carlo tree search (PIMCT)
Using counter factual regret minimization (CFR) alone would result in a stronger bot. But CFR cannot be naively applied to euchre -- the game is too large.

Instead, I use CFR for the first phase where trump is chosen and PIMCTS for the second phase where cards are played.

More detail on the approach can be found on my blog: CFR for euchre