[Pachi] Playing style

Norbert Vegh vegh at norvegh.com
Fri Apr 1 15:43:44 CEST 2016

Hm, I don't use the patterns under http://pachi.or.cz/pat/. Are there 
some defaults patterns that pachi uses?
I think I tried once having pachi play against mogo, and did not see 
that huge difference in strength. I might try it again. Anway, I much 
prefer playing againts pachi as the games look human and esthetically 
more pleasing. Games with mogo get very chaotic.

Thanks for the answer and your great work,

On 04/01/2016 03:05 PM, Petr Baudis wrote:
>    Hi!
> On Fri, Apr 01, 2016 at 02:43:04PM +0200, Norbert Vegh wrote:
>> I have a question the has been on my mind for some time. I started to learn
>> go by playing against Mogo, the first MC go engine. Mogo was relatively
>> strong but had a very alien style. After it ran out of book moves it would
>> favour strange central moves above the fourth line. In contrast the newer MC
>> programs like Pachi play very human moves. Why is that?
>    I think it has two aspects:
>    (i) Quite simply, as the programs get stronger, they play less strange
> moves, because humans probably aren't all *that* bad at Go.  We'll have
> a better idea about this when the rumord AlphaGo-AlphaGo games are
> published.
>    (ii) All the new programs use large-scale patterns extracted from pro
> (and potentially strong ama) games, including Pachi (if you set it up).
> This is important for the playing strength, and is clearly reflected in
> the shapes the program plays.

More information about the Pachi mailing list