Another Number

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The following position chills to -1/2 (1/2 point for White).

[Diagram]

-1/2

[Diagram]

Black first

If Black plays the result is 0. That chills to -1, because it costs Black a point to make a play.

[Diagram]

White first

W1 reverses. The result is -1, which chills to 0.


The chilled game looks like this:

                   { -1 | 0 }

In CGT that equals -1/2. That's no surprise. Go players already knew to count that as 1/2 point of White territory.

--BillSpight


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