DietersMistakesIn2022/solution10

L+1  

In the game I was pretty pleased to kill Black with a hane. It's pretty comfortable to have this knowledge ready. But AI Sensei didn't agree.

L+1  

AI Sensei thinks this is 3 points better. Black then would defend his group and reduce at a. Should Black live at then builds while attacking and has a follow-up at b.

Failure to evaluate the value of a kill.