(White would then take the two step ko first by capturing B7)  

LukeNine45: Is this the answer? It doesn't seem like a very useful ko...

pwaldron: You're close, although what happens if White plays W6 at B7?

(White would then take the two step ko first by capturing B5)  

LukeNine45: Ah, of course (this still doesn't seem great, but my intuition says it feels right). Ironically, I actually thought about this but I had misread the variation in the next diagram:

pwaldron: This diagram (and the following) look correct. When you say they don't look great, you have to compare the result to the alternative, where Black loses his stones without compensation. While it won't be easy for Black to win the ko, he will get something for the effort. Black can also do nothing and force White to put an extra stone into the position, in which case Black's compensation is getting to play an extra move on the outside.

(White would then start the ko by taking B3)  

So from this we can see that I misread the descent 100% of the time (er, all two times). hehe.

GokyoShumyoSection3Problem39/Attempts last edited by on January 31, 2007 - 15:34
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Login / Prefs
Sensei's Library