They're chilling it out together with Nethack in the Club for AI Benchmarks yet to be Beaten.

Interestingly, Bongard problems do not have a private test set, unlike ARC-AGI. Can that be because they don't need it? Is it possible that Bongard Problems are a true test of (visual) reasoning that requires intelligence to be solved?

Ooooh! Frisson of excitement!

But I guess it's just that nobody remembers them and so nobody has seriously tried to solve them with Big Data stuff.