Lesson details
- Level
- beginner/intermediate
- Updated
- 2026-09-30
- Concepts
- corner life · outside influence · territory · endgame timing
- Tags
- joseki · star-point · 3-3 invasion · corner life
Lesson 6 · Star Point Three-Three Invasion I
Star Point Three-Three Invasion I
Explore the starting position, play each move on the board, and compare alternative branches.
Use the board, move controls or keyboard arrows to follow the lesson at your own pace.
Learning goals
- Identify the 3-3 invasion
- Build outside influence
- Choose Black 7
Identify the 3-3 invasion
After White invades at C3, where does Black block in this line?
This variation is coming soon.
Setup: 2 stones · Black to play
Play the variation
Click or tap an empty intersection to play the next move.
Use ← / → to step backward or forward. Each branch starts from its own position.
Stones and move list
Black (setup) D4, White (setup) C3