Re: [computer-go] How to kill white the hard way

[Gunnar Farnebäck <gunnar@xxxxxxxxxxxxxx>]

Darren wrote:
>   O # - # # O O O -
>   - O # # - # O # O
>   O O O # # O O # -
>   O - O # O O # - #
>   # O - O O # # # O
>   # # O O # O # - O
>   - # O # # O # # #
>   # - # - # O - O #
>   # - # - # O # O -
> 
> Black was actually doing well until the ladder got right up to the top-right 
> then it decided it wanted to fight a semeai instead of just finishing off white.
> 
> The irony of the terminal position is that if black had a lot of ko threats 
> he could actually capture the original white chain and get the answer right 
> :-). (actually now I look again I'm not so sure: that is quite an impressive 
> problem - is it a 4-step ko?)

To me it looks like black is dead by double ko, with the extra twist
that if black tries to use it as a ko threat when fighting ko
elsewhere, white can ignore it a few times before black can turn it
into a real ko.

This brings me to a followup question. What is state of the art on
classifying different types of ko results?

/Gunnar

_______________________________________________
computer-go mailing list
computer-go@xxxxxxxxxxxxxxxxx
http://computer-go.org/mailman/listinfo/computer-go