Arena

Can you find a weakness in a trained strategy? Play heads-up Kuhn poker against PokerAlpha’s CFR policy — then see exactly what it observed about you.

A controlled small-game sandbox. The opponent is a CFR policy for Kuhn poker (three cards, one betting round), not the Hold’em release strategy, and everything runs in your browser.

Kuhn poker in 15 seconds

Three cards: J < Q < K. You each ante 1 chip and get one private card. One round: check/fold (“pass”) or bet/call one chip. If a bet is called, the higher card wins; fold and the bettor takes the pot. Tiny game — but it already forces bluffing and mixed strategies, which is why it is the standard first test of a poker solver.

The opponent is the committed CFR policy from the learning lab (exploitability 0.0015 chips/hand). Everything runs and stays in this browser tab. This is a research sandbox owned by PokerAlpha — not a gambling product and not connected to any poker site.