[computer-go] Positions illustrative of computer stupidity ?

[Rémi Coulom]

John Tromp wrote:
>
>
> On 11/23/06, *Rémi Coulom* <Remi.Coulom at free.fr 
> <mailto:Remi.Coulom at free.fr>> wrote:
>
>     I have come up with a simple position where GNU Go fails: it is a
>     position with two ladders. The best move is a double-purpose ladder
>     breaker at the intersection of the two ladders. GNU Go plays terribly
>     bad when ladder-breakers are involved. I wonder what other Go
>     programs
>     play in the attached position.
>
>
>
> But note that white should play K9 to break the ladders.
> If white plays K10, then  black can reply at K9  to secure both ladders.
Thanks John. I had not noticed that.
>
>     Also, I would appreciate if some strong players could check this
>     position for correctness. I tried to make the position balanced so
>     that
>     if White does not play in the center, then it loses the game, and
>     if it
>     plays in the center, then it should win. But I am really not sure
>     at all
>     whether it is balanced or not.
>
>
> I agree W loses if he loses both ladders, but the situation if white saves
> one ladder is not so clear. Black still holds 4 corners and can reduce
> w's territory around the ladder w saved. I'd say the odds are still in 
> black's favor.
What would you change to make the position more balanced ?