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Subject: Re: Here's a position I call "Somebody's in trouble" -- Your prog says what?

Author: Heiner Marxen

Date: 09:03:11 02/07/02

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On February 07, 2002 at 06:35:45, Uri Blass wrote:

>On February 06, 2002 at 19:20:45, Heiner Marxen wrote:
>
>>On February 06, 2002 at 18:52:09, Dann Corbit wrote:
>>
>>>On February 06, 2002 at 18:40:22, Miguel A. Ballicora wrote:
>>>>perft 5
>>>>depth 0: leaves:          1 accum:          1
>>>>depth 1: leaves:        131 accum:        132
>>>>depth 2: leaves:        200 accum:        332
>>>>depth 3: leaves:      26160 accum:      26492
>>>>depth 4: leaves:      15031 accum:      41523
>>>>depth 5: leaves:    1928938 accum:    1970461
>>>>seconds: 8.35 nps: 235926.83
>>>
>>>Beowulf says:
>>>[1]W > perft 5
>>>Progress :
>>>.................................................................................................................................
>>>..
>>>Total: 1928938 Moves
>>>0.80 Seconds
>>>
>>>Crafty says:
>>>White(1): setboard 4k3/Q3p1Q1/1Q5B/Q1QN1NQ1/4QQ2/B2Q4/8/2R1KR2 w - -
>>>White(1): perft 5
>>>total moves=1928938  time=1.10
>>>
>>>The number looks good.
>>
>>Chest says:
>>
>>W:  Ke1 Qa5 Qa7 Qb6 Qc5 Qd3 Qe4 Qf4 Qg5 Qg7 Rc1 Rf1 Ba3 Bh6 Nd5 Nf5 (16)
>>B:  Ke8 Pe7 (2)
>>FEN: 4k3/Q3p1Q1/1Q5B/Q1QN1NQ1/4QQ2/B2Q4/8/2R1KR2 w - -
>>Counting width of legal tree, 5 plies deep...
>>Time (user) = 0.39 sec
>>dep          #nodes     quot        sum nodes
>>  0               1 [  0.000]               1
>>  1             131 [131.000]             132
>>  2             200 [  1.527]             332
>>  3           26160 [130.800]           26492
>>  4           15031 [  0.575]           41523
>>  5         1928938 [128.331]         1970461
>>
>>(On an Athlon/600)
>>So we all agree :-)
>>
>>Cheers,
>>Heiner
>
>My program also agree with the number except the time.
>It says 0.27 seconds
>some other results(I hope that they are correct):
>
>perft(6)=1114923 6.058 seconds
>perft(7)=139327522 18.627 seconds
>perft(8)=113197588 439.352 seconds
>
>Uri

Chest agrees on the numbers. although not on the time :-(

FEN: 4k3/Q3p1Q1/1Q5B/Q1QN1NQ1/4QQ2/B2Q4/8/2R1KR2 w - -
Counting width of legal tree, 8 plies deep...
Time (user) = 773.87 sec (12.9 min)
dep          #nodes     quot        sum nodes
  0               1 [  0.000]               1
  1             131 [131.000]             132
  2             200 [  1.527]             332
  3           26160 [130.800]           26492
  4           15031 [  0.575]           41523
  5         1928938 [128.331]         1970461
  6         1114923 [  0.578]         3085384
  7       139327522 [124.966]       142412906
  8       113197588 [  0.812]       255610494

Cheers,
Heiner



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