Never thought I'd see my github repo cited in a DeepMind/Brain paper. I still have SOTA for >2 player by a large margin :)
I'd be pretty impressed if they beat my 5p strategy without Hanabi-specific stuff, but I assume that's not their goal. Good luck to DeepMind/Brain either way!
Authors: would love to chat sometime if you're reading this! If I get back to Hanabi botting, I might try to use a learned policy to replace some of the random (very non-optimized) heuristics my bot had.