Really surprised that 1stproof.org was submitted three times and never made front page at HN.
https://hn.algolia.com/?q=1stproof
This is exactly the kind of challenge I would want to judge AI systems based on. It required ten bleeding-edge-research mathematicians to publish a problem they've solved but hold back the answer. I appreciate the huge amount of social capital and coordination that must have taken.
I'm really glad they did it.
Of course it isn't made the front page. If something is promising they hunt it down, and when conquered they post about it. Lot of times the new category has much better results, than the default HN view.