It can write a chess engine because it has read the code of a thousand of chess engines. This benchmark measures a different aspect of intelligence.
And as a poker player, I can say that this game is much more challenging for computers than chess, writing a program that can play poker really well and efficiently is an unsolved problem.
>>marksi+041
Pluribus didn't solve poker. It's limited to fixed starting stack sizes. It can't exploit weak opponents, it tries to approach a Nash equilibrium, but in multiplayer poker, Nash equilibrium doesn't have the theoretical guarantees it does in head's up. And lastly, it requires a ton of compute.