10,000+ Go problems, sorted by theme
Go AI's problem collection covers ten themes, from counting liberties to life and death. Layered hints and explanations show why a move works, not only where to play.
What is tsumego?
Tsumego are Go problems: you get a position on the board and look for the right way to play it. Solving them trains you to read ahead. You may also see them called life-and-death problems.
The ten themes
- Liberties: counting the empty points next to a group.
- Atari and capture: stones with one liberty left, and how to take them.
- Connect and cut: joining your groups and separating your opponent's.
- Shape: placing stones so they work efficiently.
- Snapback: letting your opponent capture, then recapturing more stones.
- Shortage of liberties: when too few liberties stop a group from connecting or defending itself.
- Ladders and nets: chasing stones to the edge, or loosely enclosing them so they cannot run.
- Squeeze: sacrificing stones to force your opponent's into a clump.
- Semeai: a capturing race between two groups.
- Life and death: making two eyes to live, or stopping your opponent from doing so.
If you are new to Go
The collection includes 420 explained beginner rule exercises across ten units. If you do not know the rules yet, start with the free beginner course.
Practice anywhere
Training keeps working offline after installation, with no account and no ads. You can try it for free, and a one-time purchase unlocks unlimited training.