I played the following game:
In the final position, it seems to me that the stones in the bottom left are in seki, but the score estimator says that the white stones are dead. Counting up my points, it seems to me that I should have won by 12.5 points, but it says I'm winning by over 30. What's happening here? Is there a tactic I'm not seeing or a rule I am unaware of? The scoring system being used is Chinese.