Border Lines
![[Diagram]](../../diagrams/39/8bdcb8356becb568446597b5115118e6.png)
border lines
Border lines are the junctions between moyo. These borders are a specific type of sector lines.
![[Diagram]](../../diagrams/2/f47634ff6bfab0253f833d51a5732602.png)
border lines
Either
plays on the border line, widening white's moyo and reducing black's moyo at the same time.
Andy Pierce: I always thought "border lines" were symmetric with respect to opposite colored stones as in:
![[Diagram]](../../diagrams/22/b5618db206b6cf0b0abbef3c1b57406c.png)
moyo boundary
The examples above are of the form:
![[Diagram]](../../diagrams/11/69169c7bf2df44faeda1f0af067d89fc.png)
moyo boundary
Which is not quite the same (
was at a) although I believe the indicated points to still be the correct boundary plays. Are there any general rules about where to play given different spacings between the existing black and white stones?