Tsumego From Games 9 / nomad's suggestion

nomad's idea  

White 1 looks promising. It leads to ko, but one that favours White.

Nomad's idea (continued)  

If Black answers with 2 here he will die.

Leading to ko  

Playing 2 here is a good response and will lead to ko. The ko favours White.

DaveSigaty: I think this ko doesn't just favor White, but actually is hopeless for Black.

Hopeless for Black?  

Black is in atari and there are no internal threats.

Any chance for Black?  

This 2 also seems to go nowhere. If 6 at 7, White plays 6 and clearly leads in any capturing race.