Suspicious Player

Hi guys, i have 1 question. A few minutes ago, i was playing atomic with 1580 rating player (I was lost against with he two time). In the game, he did some..good moves? I think : he is a good player but low rating or I made blunders? (Because I often made blunders today).

So I checked his game archives. And I found that he lost against low rating players (1400-1600) but he won against high rating players (1700+). He plays very well against players with higher ratings, but he is different when playing with lower ratings. And strangely, he has resigned several times when he wants to win. So what do you think with this player? Did he cheat or was it just a coincidence?

You can check my game against him

www.chess.com/variants/atomic/game/66479355

He played very well in the game against you.

Yes, but he wins against players with higher ratings and loses against players with lower ratings. I think it's suspicious

i just investigated

i think bannable for sandbagging + potential cheat

for sandbagging they go for mate then resign

usually that happens when someone has to go and cant play anymore but 1. theyd probably wait for their opponent to make a move if its just one move and 2. its really consistent which means that this is probably on purpose 3. they continue playing other games immediately after resigning which means they dont actually have to go (easy case closed sandbagging)

honestly idk if this is cheat since their move times are (kind of??) realistic

the only things i can get on them for this is 1. incredibly high precision, even top players cant do that as consistently as they do and 2. the moves that take up a lot of time usually arent even hard moves

if they really are cheating idk what kind of method this is since they play about 2-3 seconds too fast to be engine checking

honestly i think they might have just been going for the rank (theyre currently #3333) but that doesnt excuse sandbagging

going to report to admins

Sandbaggers are the worst, worse than cheaters IMO because the damage they inflict on your ranking is catastrophic.

Has anyone here ever played against him? I'm curious about how he play, especially against higher rating players (1700+)