[Computer-go] How many probes down the tree are necessary for a "good" bot?

Petri Pitkanen petri.t.pitkanen at gmail.com
Tue Nov 12 21:48:38 PST 2013


3013 :) You are really ahead of us.

I am KGS 4-5k and Manyfaces on two core 1,5 GHz will usually beat me. If I
take 2 stone handicap I usually beat it. And I always use lopsided time
controls, computer is not nearly impatient as I am, something like 30 min
for me and 15 mins for it and 30 secs byo-yomi. I think bots are relatively
stonger on non-handicap games. I can check how many sims it does for that
but not 100 000 I would say.

And 5k KGS is probably round 7k Finnish Go Association. So ratings are just
as confusing in go as they are in chess servers f.ex  (try to count on
chess.com forums how many threads there are on subject 'how does this
rating related to that rating')



2013/11/13 Darren Cook <darren at dcook.org>

> > How many probes/playouts are necessary for a 19x19 MCTS bot to beat a
> human
> > amateur?  Let's say 5k rating.
>
> (5 kyu will need defining a bit more: can we assume a KGS 5-kyu?)
>
> If light playouts (i.e. random, with just the most basic go knowledge to
> prevent filling your own eyes and ko checking to avoid infinite loops),
> I don't think there is any program that can beat a 5-kyu. So, my answer
> is "lots and lots".
>
> At the other end, with heavy playouts some of the programs sound like
> they might be playing at that level with 100K playouts? (That is a very
> rough guess; I'm going by the "Measuring program strength" thread (Aug
> 3013) where people are getting 50% against GnuGo with 1K to 10K playouts.)
>
> Darren
>
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