[Computer-go] CrazyStone in the 5-dan footsteps of Zen

[Aja Huang]

I have played several games with the 5 dan CrazyStone (24 cores) and felt 
that it is pretty close to the 5 dan Zen (26 cores) in playing strength. In 
fact, CrazyStone’s playing style is much more balanced and human-like than 
Zen. Specifically, CrazyStone is better than Zen at winning without killing 
or fighting. It has a very good sense of territory and features very good 
pattern shapes, though it is still weaker than Zen in handling semeais.

Blitz games such as 15s/move favor MCTS programs. I expect both Zen and 
CrazyStone will drop to 4d in longer games. The reason is that MCTS programs 
are still not able to (in my opinion) read deepily like human players in 
situations such as big semeai or life-and-death. Also, when against strong 
Go players in fast games MCTS programs rely heavily on accurate territory 
counting. In longer games, this advantage will decrease most if not at all.

Aja

From: Don Dailey
Sent: Monday, January 02, 2012 3:28 PM
To: computer-go at dvandva.org
Subject: Re: [Computer-go] CrazyStone in the 5-dan footsteps of Zen




On Mon, Jan 2, 2012 at 4:02 PM, "Ingo Althöfer" <3-Hirn-Verlag at gmx.de> 
wrote:

  Hello Don,


  > What time control was used for these games or did it vary?


  In the last few days it was 15 seconds per move, with
  9 byoyomi phases.

I don't think that specifies the time control does it?    So if a player 
exceeds 15 seconds he starts to use one of his byoyomi periods?    How long 
for the byoyomi phases?

I don't think 15 seconds per move average is bad for humans at all,  but if 
you have to make each move in 15 seconds it's horrible and I can see that 
this is going to make the computer really look good.

For making strength claims there should be some sort of standard.   You 
could take almost any program and get 5 dan or more  by setting the time to 
1 second per move.

Don




  Ingo.


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