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Seki with eyes question 6
    Keywords: Life & Death, Question

Yet another interesting seki with eyes:

[Diagram]
Diag.: Outer stones alive (2)

This is a seki too, even though White can capture the two Black stones in the corner (but does not benefit from doing so!).

-- jvt

Why would this be a seki? White plays the 2-2 point, and can then play the 1-1 point to make 2 eyes. Something must be missing here.

-- bp

Using Chinese rules:
Black: 1 point, White: 2 points.

Using Japanese rules:
Black: 0 points, White: 0 points.


[Diagram]
Diag.: Outer stones alive (2)

If White plays 1, Black will snapback with 2. White can only capture the two stones with 3 and allow Black to capture two stones with 4.

Using Chinese rules:
Black: 4 points, White: 4 points.

Using Japanese rules:
Black: 2 points, White: 2 points.

Using either ruleset, White does not gain by playing at the 2-2 point.

--unkx80





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