Re: [computer-go] Just for fun

[Tapani Raiko <praiko@xxxxxxxxx>]

Hi!

Go81 bot is the development version so I have had a buggy version running
but not against Botnoid (I think). That could have had explained things.

Instead, I believe it is more about programs playing essentially same
every time. Go81 vs. Botnoid or tlsbot very often leads to Go81 making an
invasion. On the other hand, Go81 vs. FStoned often lead to Go81 taking
the centre with one group and dividing FStoned into 3 groups. Moves are
different but the story is the same. I would expect a lot of things like:
program A is better than B, B is better than C, and C is better than A.

Go81 is also monte-carlo based and tries to combine maximising winning
chances and territory (currently) by the following:
X = score;
if (X>10) X=10;
if (X<-10) X=-10;
if (X>0) X=X+20;
It tries to maximise the expected X. Go81 is very bad in some endgame
situations, like not really knowing that the monkey jump is connected.
Therefore I chose not to ignore the score completely. If the variance of X
is less than 1 point, Go81 switches into a blitz mode, which is actually
the mode used in the Palm version. So Go81 does not pass when winning
clearly (as Viking did in the tournament) or resign if losing, but at
least plays very fast. (Try to challenge it with 20 seconds instant
death...)

And yes, Go81 is getting better, hopefully I can start to call it Go169
soon. :)

Cheers,
Tapani
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