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RTG Problem 20 / Attempts
Sub-page of RTGProblem20
Living is not so difficult. Can black do better? unkx80: Unfortunately, this does not live. Think under the stones.
wait a minute. why doesn't this live? If white cuts 1 and 3 the snapback works. (black retains miai) Am I being dim? unkx80: Sure the snapback works, but think further than the snapback itself. As the name "under the stones" imply, please consider what happens after the capture of the stones (in the sense the stones are physically removed from the board). (Later) I actually forgot that I had this problem set as Snapback Problem 16. That should explain why.
After
a and b miai for killing.
Will this work, find it hard to read out the snapback
Bill: MikeTerry: I can't see anything better than this for Black. White can try the same under the stones trick as in the first diagram, but then...
Note the extra space at a. Now when White plays back under the stones at b...
Black lives with a double Ko. So White is unable to avoid fighting a Ko at some point in the sequence to kill.
Bill: Nice analysis, Mike. :-)
But even after
In fact, Black is even alive in this position, after
MikeTerry: DOH! The perils of late night posting :)
This is a copy of the living page "RTG Problem 20 / Attempts" at Sensei's Library. ![]() |