Was it something inDann Corbit wrote: ↑Tue Oct 13, 2020 1:43 am For Vincent's recent tough problems list, LC0 solved one in a few seconds that bleeding edge Stockfish failed to solve in an hour using 60 threads and 65 GB RAM with full 6 man TB files.
http://talkchess.com/forum3/viewtopic.php?f=2&t=74992
(or http://talkchess.com/forum3/viewtopic.php?f=2&t=74051 )?
If it is, it's not obvious from the posts which one.