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Subject: Re: Can your (amateur) prog solve this?

Author: Andrew Williams

Date: 00:44:32 02/19/99

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On February 19, 1999 at 03:07:00, Cristian Zaslo wrote:

>On February 18, 1999 at 09:49:01, Andrew Williams wrote:
>
>>On February 18, 1999 at 00:50:41, Will Singleton wrote:
>>
>>>
>>>Here's a position that occurred between Amateur and Fortress on fics.  Amateur,
>>>as white, played dxe5, which seems to lose.  It would be interesting to see if
>>>any of the amateur programs out there will avoid playing dxe5.
>>>
>>>1r1qr1k1/1pp3p1/5p1p/p2ppb2/2nPnB2/PQP2NP1/2P1PPBP/3R1RK1 w - -
>>>
>>
>>Hi Will,
>>
>>This is what PostModernist thinks:
>>
>>INITIALIZATION TIME: 15
>>FEN result : 1
>>
>>8  . r . q r . k .
>>7  . o o . . . o .
>>6  . . . . . o . o
>>5  o . . o o b . .
>>4  . . n P n B . .
>>3  P Q P . . N P .
>>2  . . P . P P B P
>>1  . . . R . R K .
>>
>>   a b c d e f g h
>>
>>
>> 2>   -73     0       275   d4xe5
>> 2b   -68     0       339   f3-h4
>> 2=   -68     0       339   f3-h4
>> 3>   -75     0      1063   f3-h4
>> 3=   -74     0      1173   f3-h4  a5-a4
>> 4>   -74     0      1831   f3-h4
>> 4=   -71     0      3080   f3-h4  a5-a4  b3xa4
>> 5>   -71     0     10787   d4xe5
>> 5=   -54     0     21807   d4xe5  f6xe5  f3xe5  a5-a4  b3xc4  d5xc4
>> 6>   -88     1     54040   d4xe5
>> 6=   -86     2     91603   d4xe5  a5-a4  b3-b4  f6xe5  f3-h4
>> 7>   -93     5    172952   d4xe5
>> 7=   -92     5    177521   d4xe5  a5-a4  b3-b4  f6xe5  f3-h4  d8-d7
>> 8>  -109    18    630948   f4-c1
>> 8=  -103    20    701131   f4-c1
>> 9>  -120    98   3420513   f4-c1
>> 9=  -114    99   3452091   f4-c1  e8-e6  d1-d3  e6-b6  b3-a2  d8-d6  e2-e3
>>
>>If this was a five-minute game, PostModernist would almost certainly have
>>taken the Pawn.
>>
>>Cheers
>>
>>Andrew
>
>
>Would you mind explaining me the meaning of "b", ">", "=" in your chess prog ?
>Regards,
>

Sorry Cristian, I forgot to include it.
2>   -73 Means that I have established that the score is AT LEAST -73 after
         a 2-ply search.
2b   -68 Means I have found a new best move at depth 2 (score for this move
         is at least -68)
2=   -68 Means I've finished my depth 2 search and I think the score is -68

Where you see >, it should really be ">=", I suppose.

The columns from left to right are: depth, score, time, nodes, pv.

Regards

Andrew



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