Life In 19x19

By the way, an article in Go World 52 sheds some light on the difference between "5 points komi but White wins jigo" and 5.5 points komi. On page 47, Sakata relates how Fujisawa Shuko won the first (modern era) Meijin title in 1961. In the last round, Sakata played black against Go Seigen and finished 5 points ahead on the board, meaning that the position was jigo, a win for Go Seigen. So at the end of the round robin, both Go Seigen and Fujisawa had 9 wins and 3 losses. Without jigo, this would have resulted in a playoff. But Go Seigen's "jigo-win" didn't count as much as a "real" win, so the title was awarded to Fujisawa without a playoff.

I don't know how well it actually works in reality, but in theory you can make KataGo treat a draw as favorable but as only a fraction of a win. You have to actually pick a numeric value though. So for example drawEquivalentWinsForWhite = 0.75 instead of the default drawEquivalentWinsForWhite = 0.5 would make it consider a draw to be like 3/4 of a win and 1/4 of a loss for white.