Border Lines

  Difficulty: Beginner   Keywords: Strategy, Theory
[Diagram]

border lines

Border lines are the junctions between moyo. These borders are a specific type of sector lines.

[Diagram]

border lines

Either W1 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]

moyo boundary

The examples above are of the form:

[Diagram]

moyo boundary

Which is not quite the same (black+circle 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?


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