Re: [computer-go] Mathematically sound rules for determining when thegame is over

[Don Dailey <drd@xxxxxxx>]

If you want the most logical set of rules, look at Tromp/Taylor rules.
There is nothing simpler and easier to work with.

In a  nutshell, the game is  scored with 2  consecutive passes.  There
does not need to be agreement about what the score actually is because
the rules define  exactly how the scoring is to be  done.  If one side
passes when the opponent still has dead stones on the board, it is his
own fault but that doesn't prevent the game from being scored.  Again,
there is  no ambiguity about how the  scoring is done and  there is no
special skill or ability involved in getting this part right.

Tromp/Taylor  is  very  similar  to  New Zealand  rules  but  expects,
although it  doesn't require, the game  to be fully  played out pretty
much like your email suggests.

- Don



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   Hello,
   I've been trying to figure out a good set of rules for unequivocally determining when a game is over. Ssince mutual passing only works when both players agree on the score, what happens if they never agree, regardless of how far the game progresses? If the rules of go are to be logically sound there must be a way to determine the score from the rules of the game when it has been fully played out. 

   What I've come up with is: (I'm assuming chinese rules with super-ko rule.)
   * The game is over when neither black nor white have any valid moves except moves that put one of its own groups into atari.
   * When the game is over your score is the number of stones of your colour on the board and the number of empty intersections surrounded on all sides by stones of your colour.

   This seems to work; when all groups have only two one-stone eyes or are in seki the game is over and the score is easy to determine. But are there any problems or inconsistensies with the standard rules that I'm missing?

   Regards,
   David

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