I am not talking about that Zen’s “blunder” but simply mentioned in 
passing about handling mirroring strategy that Yamato and we don’t want to 
spend time with. For this game, you should be strong enough to judge Zen was 
winning or not.

Aja


From: Jouni Valkonen
Sent: Monday, January 16, 2012 5:33 PM
To: Aja Huang ; [email protected]
Subject: Re: [Computer-go] Zen blunder in long mirror go game

I think that the main problem was not winning or losing a mirrored game but 
the blunder in late endgame by playing suicidal move. Perhaps Zen was losing 
the game, so this was the reason for the blunder. But if Zen was winning, 
then it was serious bug and it had nothing to do with the mirroring itself.

      —Jouni

On Jan 17, 2012 2:26 AM, "Aja Huang" <[email protected]> wrote:

  In the last UEC Cup, the Japanese program katsunari played with mirror Go 
strategy against Zen, Fuego and ManyFaces. katsunari lost all three games.

  http://jsb.cs.uec.ac.jp/~igo/eng/result_2nd/Zen-katsunari.sgf.html
  http://jsb.cs.uec.ac.jp/~igo/eng/result_2nd/katsunari-Fuego.sgf.html
  
http://jsb.cs.uec.ac.jp/~igo/eng/result_2nd/katsunari-TheManyFacesofGo.sgf.html

  Note that Fuego lost the game finally (by filling own territories) because 
I carelessly set the config with Chinese rules.  Anyway, there should be no 
problem for current strong Go programs on mirror Go strategy in "EVEN or 
tournament games".

  Aja

  -----原始郵件----- From: Yamato
  Sent: Monday, January 16, 2012 5:16 PM
  To: [email protected]
  Subject: Re: [Computer-go] Zen blunder in long mirror go game

  (2012/01/17 8:43), Michael Williams wrote:

    If the author looks at it, could you update us?  I'm always curious
    about how such things happen, especially in a bot as strong as Zen.


  Honestly I don't want to spend a lot of time on this type of problem.

  -- 
  Yamato
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