[Computer-go] Zen blunder in long mirror go game

[Michael Alford]

On 1/17/12 4:38 AM, Jouni Valkonen wrote:

> My apologize, I trusted too much that GnuGo's score estimator would have
> handled Chinese rules. So end result was not w+½ but b+½, because black
> filled the last dame.
>
> It looks like that indeed mirror go in handicap games is a problem for
> gobots. I think that if it is abusive then it should be dealed as any
> other sandbagging or rating abuse, i.e. deranking. I do not see that
> singular mirror go trials (because they played in Hikaru no Go mirror
> go) are problem, because it is extremely boring, if you are going to do
> this in large and abusive scale. I once tried it against MFGo in even
> game, and I was shocked when I realized that I was behind about 6
> points. All the efforts were ruined!
>
>      –Jouni


There are ways to handle mane-go, which is a valid way to play. For 
instance, I have an sgf of a game between Cornel Burzo as W and a Euro 
5d as B at h4 free placement. The Euro 5d made a ponnuki around k10 with 
his handi stones and then played mane-go. Cornel won the game. There is 
no reason to consider mane-go abusive.