[Computer-go] Game 2 goes to Zen: 1-1

[Stefan Kaitschick]

Congrats to Zen this time.
Thanks again, Ingo.

"Later this group went over Jordan."
For some reason crossing the Jordan is not one of the hundreds of
euphemisms that do exist in the english language.
How about "it entered the garden of serenity" :-)

The MFs winrate graph is pretty good at telling the story.
Zen played an impossible tenuki in the top right, but John didn't fully
take advantage.
He should have played the nobi to the edge.(As so often, the opponents move)
That tenuki reminds us that it's still the early days in go bot programming.
A few moves later John played an ill conceived crosscut in a difficult
position and with that Zen had the better opening again.
Then John started on a tenacious catch up tour. He seems to have a knack
for making Zen look a little aimless in the middle game. A little like
creating a closed position in chess, denying the opponent powerful short
term tactics.
Under those conditions Zen shows a certain lack of appreciation for secure
territory.
John didn't quite make it though. If he had defended the group that died,
it would still have been a loss imo.

We have a really interesting match here, but John needs to get better
results in the opening.

Stefan

Garden of Serenity
Garden of Serenity
On Sun, Jan 15, 2012 at 9:04 AM, "Ingo Althöfer" <3-Hirn-Verlag at gmx.de>wrote:

> Zen had the white stones and won game 2 of
> the GoBet-II against John Tromp.
>
> Here you find sgf
> http://www.althofer.de/zen-tromp-02.sgf
>
> Winning percents for White, as seen by "Many Faces of Go"
> http://www.althofer.de/zen-tromp-02-percents.jpg
>
> Territory estimates for White, as seen by ManyFaces
> http://www.althofer.de/zen-tromp-02-territory.jpg
>
> Observe that the diagram run only until move 153, although
> John did not resign before move 236. (The endgame included
> especially ultra-intensive monkey-jumping on the left border.)
>
> According to the experts the most decisive action was Zen's move
> 122.f2 which increased the pressure on John's group in the
> lower left, but was not addressed seriously enough by him.
> Later this group went over Jordan.
> At the end the score was +18.5 in favour of Zen.
>
> Ingo.
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