@phulwaras - I was scrolling through chess today and I saw in puzzle rush 5 min leaderboard he was first with 146. I checked his profile and I saw his best 3 min puzzle rush is 426, which means more than 2 puzzles per seconds, which just doesn't seem right.
426 puzzles in 180 seconds?


I mean I just don't understand how he does that, if you just use stockfish you wouldn't be able to play a move every 0.1 seconds or faster.

If I did my math right, that's 0.44 seconds per puzzle average, and considering that by move 50-60 puzzles can take up to 8-12 moves to solve, let's say a gross underestimation of 6 move per puzzle, that is 0.073 seconds per move, so there is something seriously wrong about this programming from chess.com ; it means somehow they either managed to program a bot that plays faster than 0.1/move, has every high rated solved puzzles in its database (that's not saying much, there must not be a thousand 4000 rated puzzles on chess.com), there is a flaw in the server's download/upload that allows time counter manipulation or any combination of the aforementioned hypotheses. @phulwaras has been at the top of the leaderboards for a while now and @chess.com hasn't done anything about it yet, which is worrysome