Snapback Problem 14 / Solution

Another endgame problem.  

White would like to play if the ko is favorable. Black can set up a very large ko with (White answers with ).

--someone

Another endgame problem.  

This is the reason why the author called it a snapback problem: Black cannot play at without getting caught in a snapback. --Dieter

So, then what?  

So... what now? Does it do something like this? And why? I'm... too.... stupid... I don't even see how White creates ko threats by doing this.

The way to secure the ko  

White doesn't connect the ko, but secures it by taking a stone with . Clearly, this is a really big gain for White. --Dansc