It's tough. There are too many patterns. In the opening, groups are difficult to evaluate for safety, since there is nothing like surrounded eyes in a 3-space extension. Many positions can be cut if you read them, but in practice are never cut since that leads to a poor position. Many faces depends on opening knowledge of good moves because its group evaluation is poor in the opening. David
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jason House Sent: Tuesday, October 02, 2007 11:03 AM To: computer-go Subject: Re: [computer-go] IEEE Spectrum article by Deep Blue creator On 10/2/07, Phil G <[EMAIL PROTECTED]> wrote: Also, is it just me that a good evaluation function early in the game is difficult to write? I think it's doable. It's just not trivial. Simple pattern matching should give a reasonable approximation for corner spats at the start of the game. Feeding group safety into an overall evaluation should be able to give tenuki plays. Books on opening theory seem relatively straightforward. I've neither coded it into my bot or mastered it in my play... So it could be tougher than I think it is ;)
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