For a few years Hactar go has used my self-trained AI model to play at human levels in 19×19 board.
Now I am changing to the Katago human engine. The playing engine is same as with the strong Katago, but the AI network is separate from the strong Katago network.
There are few things that may change due to this.
Human Katago may have little different strength calibration. Thus Hactar go opponent that was impossible to win in past may be possible to win now. Or other way around.
Also Human Katago may have different style than Ai network I have trained. I do not expect big style differences based on my own testing.