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

[Yamato]

(2012/01/17 10:45), Jouni Valkonen wrote:
> Aja, you are talking something that has zero relevance for this topic.
> Zen was winning by ½ point, but it miscalculated in late yose and
> blundered severely. This was serious endgame bug. This thread has
> absolutely nothing to do with the fact that the game was mirrored, but
> only that that Zen throw away the game in late yose.

I don't think Zen was winning.

> I have seen in my own games several times, when Zen has blundered in
> late yose and have lost a won games. I think that it is due that zen is
> winning by half point or so, but miscalculates and then tries something
> irrational. It would be good idea to analyze, to see what went wrong
> with Zen's evaluation of the score. Was that it miscalculated the
> territory or did it misread the seki thing?

In this case, the problem was seki handling. But I already have
numerous examples of misevaluation, so it is not a special one.

Yamato