Some people on codeforces (the competitive programming platform that this was tested on) are discussing the model: https://codeforces.com/blog/entry/123035
Seems like they don't believe that it solved the 3200 rated problem (https://codeforces.com/contest/1810/problem/G) w/o data leakage
For context, there are only around 20 humans above 3200 rating in the world. During the contest, there were only 21 successful submissions from 25k participants for that problem.