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Beginner Exercise 142 Attempts
Difficulty: Beginner
Keywords: Problem
Zephi: This one seems a bit complicated, but I can see at least two possibilities. Focusing on only the two marked stones, white needs B to keep them from escaping, but can't play there without being immediately captured, so I think white would have to first set up a ko at point A. After this, I think that B and C are miai for capturing, though white would need some good ko threats to make B work. Here's how I think both cases would look:
Black looks pretty dead if he just connects to avoid the ko.
In this case, black takes first in the ko, so white needs to have some really good ko threats to make this work.
Again, Black takes first, and white needs a very good ko threat. ( Well, if this isn't the solution, I hope it's at least on the right track.
Malweth: Going with your last diagram, White does take ko first. If
unkx80: Sorry, but Zephi's solution is correct. In your diagram, Malweth: I'll take the easier path (I think...)
unkx80: I would say, White's play is sub-optimal. But you are almost there already. =) Malweth: I see, I think... White would do better to save the E19 group.
ChrisSchack: I think
W need only ignore a single threat to play a, winning the ko. No need to connect to the other side, they're already alive. B has a direct ko, but has to make the first threat.
On second thought, why not take This is a copy of the living page "Beginner Exercise 142 Attempts" at Sensei's Library. ![]() |