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

[Jouni Valkonen]

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

On 17 January 2012 13:43, Nick Wedd <nick at maproom.co.uk> wrote:

> On 16/01/2012 22:58, "Ingo Althöfer" wrote:
>
>> 23 november 2011 Zen19D (5d) vs need9d (4d)   (just in case attachment
>>> is removed)
>>>
>>
>> Why is that game no longer in the archives of KGS? See at
>> http://www.gokgs.com/**gameArchives.jsp?user=need9d&**year=2011&month=11<http://www.gokgs.com/gameArchives.jsp?user=need9d&year=2011&month=11>
>>
>> Has that mirror player been punished?
>>
>
> Playing mirror Go may annoy the opponent, but it is perfectly legal, and
> is not against the KGS Terms of Service.  I very much hope that no player
> has been punished for it.
>
> I realise that opponents who play mirror Go are inconvenient for bot
> develpoers.  I also know that some KGS users play mirror Go against
> stronger bots, to improve their ratings above what they deserve.  I believe
> that this is not going to change.
>
> Often, when a request is made to KGS developer 'wms' to change KGS's
> behaviour, he refuses, and I think "that's a pity, it would be an
> improvement".  But regarding mirror Go, I believe that the way it is
> handled is correct.  Developers can use the "censor" feature on users who
> repeatedly play mirror Go.
>
> Nick
> --
> Nick Wedd
> nick at maproom.co.uk
>
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