KataGo AI for ConnectFour (Four in a row)

https://en.wikipedia.org/wiki/Connect_Four
This version supports all size of boards <= 20x20
This version has much fewer wrong evaluations than the old version(20210511).

The following chart is the results of every board size <= 20x20 calculated by KataGo
Although these results are very sure, the possibility of errors cannot be completely ruled out.