Isn't this not the same thing as AI that can beat humans at things like Bridge where the bidding game matters quite a lot? IIRC in Hanabi the fact that there is imperfect information does not really matter that much for strategy, where as in things like League of Legends or Bridge or many of those types of games it really does matter quite a lot.
Bridge has a similar challenge, though from what I understand Bridge AIs are not superhuman yet. I suspect our techniques could be applied to Bridge, though they may need to be adapted a bit.
The imperfect information in Hanabi absolutely matters a ton. It's not an interesting game without it.
