8
votes
4answers
771 views

Second line invasion of two-space extension

The two-space extension is a very common pattern and forms a base. I've found lots of material here, and here, and elsewhere on how it cannot be cut and how to defend against various invasions. ...
11
votes
2answers
479 views

How far can you safely extend from your own wall?

When extending into what is basically open territory, how far can you extend to increase your influence/moyo, without inviting an invasion?