A Double Atari Pattern in GoChild problem set
I subscribe to a great tsumego site called GoChild. The name is kind of goofy to the American ear, because it’s by a Chinese developer, but it’s a cool site for a reasonable $12 a year.
Unfortunately there’s no way that I can find to link to a specific problem. The one I want to talk about is filed under Entrance Level
Capture and capturing
It’s not a hard problem, but I want to point out the pattern that this problem follows.
Black is to capture. White has two groups that have just two liberties (are in pre-atari). A black stone sits in the corner separating the two groups. Black attacks one of the groups, gaining a liberty in the process for the attacking stone which is now two stones. Then his attacking group is big enough that the white stones can be folded around it in a ladder.