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Subject: Re: Can your engine break a position open,if the human wants to play a draw?

Author: Drexel,Michael

Date: 10:22:06 09/16/03

Go up one level in this thread


On September 16, 2003 at 12:28:56, Uri Blass wrote:

>On September 16, 2003 at 12:16:19, Drexel,Michael wrote:
>
>>On September 16, 2003 at 11:54:09, Anthony Cozzie wrote:
>>
>>>On September 16, 2003 at 11:50:35, Drexel,Michael wrote:
>>>
>>>>On September 16, 2003 at 08:38:33, scott farrell wrote:
>>>>
>>>>>On September 16, 2003 at 06:25:59, Drexel,Michael wrote:
>>>>>
>>>>>>On September 16, 2003 at 06:10:13, scott farrell wrote:
>>>>>>
>>>>>>>[d] r3r1k1/1b3pbp/2p2np1/1p1p1q2/pP1Pp3/P1P1P1PP/1B2QPK1/3RRNN1 b - - 0 107
>>>>>>>
>>>>>>>If a human is playing white, and just moves d1d2, and d2d1, can this position be
>>>>>>>broken open?
>>>>>>
>>>>>>Without analysis I dare to say the position is completely lost for white.
>>>>>>h5,Bc8,Bf8,Bd6
>>>>>>Black is more or less a piece up and should win.
>>>>>>
>>>>>>Michael
>>>>>>
>>>>>
>>>>>Isnt that roughly the line crafty played that I showed below. But I dont see the
>>>>>continuation, and neither does crafty.
>>>>>
>>>>>How do you stop white from playing d1d2, d2d1 ?
>>>>>
>>>>>Scott
>>>>
>>>>In this position almost any move order will finally stop white from playing
>>>>d1d2,d2d1 because checkmate ends the game :)
>>>>
>>>>In principle your program should avoid pawn chains against humans.
>>>>If your program plays for example 1.e4 c6 2.d4 d5 3.e5 (no book of course) or
>>>>1.c3 e5 2.d4 e4 then there is something wrong.
>>>>
>>>>Michael
>>>
>>>That is the crafty approach, and it certainly works.  I'd rather teach Zappa to
>>>understand them, though. I don't see any reason why a computer can't play closed
>>>positions well.  Its just a matter of writing some eval code.
>>>
>>>anthony
>>
>>In closed positions long-term plans are often important and this is not a matter
>>of writing some eval code.
>
>Why do you assume that long-term plans cannot be described by some eval code?
>The same target may be achieved by more than one way.
>
>Uri

the word "just" somehow disappeared in my post
...and this is not just a matter of writing some eval code.
Usually before you plan you have a favourable position or certain constellation
of pieces in mind.
Then you try to figure out if at all this could be achieved.
Finally you try to find a way to achieve that goal.

Michael



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