When a player repeatedly tries to score cheat by marking a dead group as alive, but their opponent refuses to accept and eventually they give up, there seems to be no way to report this, as the back and forth between the players isn’t saved in the game history. To the admins, it looks like player 2 won correctly.
It seems important that such behaviour can be reported as they are likely to attempt it again in the future, perhaps with more success
When the game is reported, moderators can see what happened, like at time t, Black marked stones alive, at time t’ White marked stones dead, etc., so generally the cheater gets a warning, unless there was a bug (sometimes, Autoscore doesn’t work correctly).
Thanks, I hadn’t realised moderators have access to that info
Anyways, you should try playing it out for some amount of time - not too much, but at least for a little while. Just keep in mind that sometimes people genuinely don’t understand the life and death of groups in certain situations
It can also be worthwhile for a user to write a message in chat explaining why they think a contested group is alive/dead.