Bot’s aren’t able to participate in discussions about life and death, so the system uses the score estimator to score bot games.
But it is far from perfect.
A technique to get less wrong outcomes is to check the score with the score estimator before passing. Then you can see if its getting it wrong and usually play more stones to clarify life and death status.
This will often help but not every time.
You can report wrongly scored bot games and we will annull them.
A new scoring system is on the way, which will make this a thing of the past (hopefully).