These are the major user-visible changes in 0.9:
- Support for KataGo analysis. The evaluation graph can be switched between score and win rate.
- A new option to start a game against an engine game from the current board position.
- A new AI vs AI play mode. The number of games to be played is configurable, and an opening book can be used.
- It is now possible to hide/show the analysis markup of the board rather than having it displayed at all times.
- The variant game dialog now supports removing intersections from the board, allowing new variations of the game.
- Several bug fixes related to scoring mode when playing games on IGS.
- There are now a few presets for the stone visual appearance to make it quicker and easier to arrive at a nice look. The darkness of the shadows can now also be configured.
- Sounds should be a little more reliable, the samples used for stones were too short to be played on some systems.