Author: leonid
Date: 16:32:38 12/20/01
Go up one level in this thread
On December 19, 2001 at 21:28:42, Heiner Marxen wrote:
>On December 19, 2001 at 17:35:00, leonid wrote:
>
>>On December 19, 2001 at 01:09:32, Heiner Marxen wrote:
>>
>>>On December 13, 2001 at 21:46:41, leonid wrote:
>>>
>>>>[D]rqbkqnq1/3N4/QbqNqnq1/Q1R1R1B1/Q1N1Q1B1/Q1r1P1Q1/P1p1K1p1/8 w - -
>>>>
>>>>Please indicate your result.
>>>>
>>>>Thanks,
>>>>Leonid.
>>>
>>>Chest says "No solution in 10 moves."
>>>This happened on a K7/600 with 350 MB hash, and took 40.7 hours.
>>>
>>>CU, Heiner
>>
>>Thanks, Heiner!
>>
>>By brute force I went on this position only 8 moves. It took already for my
>>program 25 minutes. With branching factor that was growing all the time and went
>>between 7 and 8 move already to 10, was not sure if I will be able to see that
>>many moves even deeper.
>>
>>Cheers,
>>Leonid.
>
>In Chest the branching factor was somewhat wild:
>
># 1 0.00s 0kN 0.87 1- 0
># 2 0.00s 0kN 1.00 1- 0
># 3 0.00s 1kN [ 13.32] 0.96 71- 0
># 4 0.16s 8kN [ 8.29] 1.04 840- 0
># 5 1.07s [ 6.69] 55kN [ 6.52] 1.18 5976- 0
># 6 7.12s [ 6.65] 369kN [ 6.74] 1.34 38440- 0
># 7 50.85s [ 7.14] 2851kN [ 7.73] 1.51 255764- 0
># 8 519.41s [ 10.21] 31963kN [ 11.21] 1.59 2252944- 103
># 9 8460.16s [ 16.29] 563593kN [ 17.63] 1.63 34694868- 25946967
># 10 146390.27s [ 17.30] 5189578kN [ 9.21] 1.71 630254350- 621506449
My branching factor is very close with your but initial speed (seeing from 4
moves) is very different. I should one day go and write some next code that
could, probably, make some difference.
It is very curious that our branching factors goes so close when every other
program have branching factor very far away from our. I speak about heavy
positions.
Moves Time Branching Factor NPS
4 moves 0.49 sec 50k
6
5 moves 2.96 sec 57k
6.62
6 moves 19.6 sec 87k
7.96
7 moves 2 min 36 sec
9.63
8 moves 25 min 03 sec 165k
Cheers,
Leonid
>
>Cheers,
>Heiner
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