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Subject: Re: Static Exchange Evaluator

Author: David Dahlem

Date: 10:56:57 08/30/04

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On August 30, 2004 at 13:50:02, Robert Hyatt wrote:

>On August 30, 2004 at 11:10:24, David Dahlem wrote:
>
>>On August 30, 2004 at 11:00:12, Robert Hyatt wrote:
>>
>>>On August 30, 2004 at 10:42:34, Rick Bischoff wrote:
>>>
>>>>Hello all,
>>>>
>>>>I currently use the MVV/LVA technique in my queiscent search and am not really
>>>>happy with the bloat (it's running on my G4 now and getting some good NPS, but
>>>>the depth isn't all that great due to aforementioned bloat) so I was wondering
>>>>if anyone would be kind of enough to explain the principles behind SEE to me?
>>>>
>>>>i.e., how do you determine the correct capture order?  What do you do with bad
>>>>captures?  Do you just give them a really low score or do you just exlude them
>>>>completely from the search move list?
>>>
>>>
>>>See is a series of captures on a _single_ square.  Just like you would do, your
>>>program should always use the smallest possible piece next, when making a
>>>capture.
>>
>>"always"? Are there not some situations where capturing with a larger (checking)
>>piece would force a recapture, while a smaller piece would not, which would be
>>advantageous?
>>
>>Dave
>
>Not in SEE.  There is no concept of "checks" in any SEE implementation I have
>done or seen.
>
>SEE (static exchange evaluator) really is "dumb" in that regard. :)

My point, the way i read your statement, "Just like you would do, your program
should always use the smallest possible piece next, when making a capture.", is
that you seem to be saying this is an "always" unchangeable chess rule, whether
for humans or engines. :-)

Dave

>
>>
>>You minumax the result to see if the capture on that square wins,
>>>breaks even, or loses material.



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