Kyu Exercise 41 / Attempts

Attempt  

thanatos13: this is it, right?

Attempt  

kb: Doesn't work. Even without the stone, at a captures three stones.

Attempt  

I suspect the intended solution is something along this line: the key is to force and so that can separate the White stones at the top.

togo: at seems to be enough to defeat this plan.

Foiling the plan  

togo: Aforementioned refutation with a continuation ( to at a to d).

Attempt  

togo: Maybe ko is the solution ( at a).

togo: Oh, well, forget it: White at b saves the white group (Also with eg. at and at ).

White dies  

BCh Maybe this ? White is short of liberties so he can't kill the black stones.

Ko ( at )  

hnishy: White starts a throw-in ko and use as a local ko threat. Black a is a ko threat, but it also gives White one or two threats. White can resolve the ko by playing at b!.

Ko ?  

BCh I don't see how to avoid a ko after white 6, but that's a ko that black takes first. is not a ko as white can force a, b after