Titpea
A KataGo opponent
About 30 kyu to 7 dan; handicap suggested from your level.
Goban Studio · Desktop Go game
Learn Go, play, review.
Go on 9×9, 13×13 or 19×19, from the first stone. KataGo plays at your level and reviews every game on your computer.
Not notarized yet: on macOS, right-click the app and choose Open the first time; on Windows, choose More info, then Run anyway.
Problems with proved answers.
543 built-in problems, each answer proved by the app’s solver; import your own SGF collections too.
From the first stone to a review.
A review of every game
Win rate, score lead, and your three costliest moves with better lines.
This week’s focus
One or two themes from your games and problems, with the reason.
Lessons from the first stone
18 units and 82 lessons, from beginner to about 1 dan.
Boards and rules
9×9, 13×13, 19×19; Japanese, Chinese or Korean rules; up to nine handicap stones.
An opening book
3,874 positions evaluated by KataGo, included offline.
Nov 4, 2026
What’s new in v7.0.0.
- v7 reads and writes standard coordinates
- What cannot be repaired
- The Daily five is filled with problems and drills for that focus at your solving level
Where your data goes.
- KataGo and its network ship with the app and run on your computer; two larger networks download only if you choose them.
- Games, progress, level and settings stay in the app’s storage on this computer; Back up saves them all to one file.
- No account or telemetry. Check for updates contacts GitHub when you ask; the weekly check is off until you turn it on.
FAQ
Can it sit beside Goban, the Gomoku app?
Yes. Goban Studio is a separate app with its own name, bundle ID and repository, so the two install and update independently.
Which computers does it run on?
macOS 11 or later on Apple Silicon or Intel, and Windows 10 or 11 on x64 with WebView2, which they usually include. Windows on ARM runs the x64 build under emulation; analysis is slower there.
How strong is the computer?
From about 30 kyu to about 7 dan, on a standard or a human-style ladder. The labels are approximate: they are calibrated against a model, not against people.
I imported SGF games before 7.0. Are they right?
Records from other programs that use the letter i in their coordinates were misread before 7.0; import them again. Records the app saved itself read as before.
Goban Studio