Author: leonid
Date: 17:07:24 03/08/01
Go up one level in this thread
On March 08, 2001 at 19:06:04, Uri Blass wrote:
>On March 08, 2001 at 18:56:35, leonid wrote:
>
>>On March 08, 2001 at 17:00:44, Uri Blass wrote:
>>
>>>On March 08, 2001 at 15:30:19, leonid wrote:
>>>
>>>>On March 07, 2001 at 22:34:41, Dieter Buerssner wrote:
>>>>
>>>>>On March 07, 2001 at 16:48:55, leonid wrote:
>>>>>
>>>>>>rkrR1q2/qqq1Q1Rq/nnQbN2Q/Qq2N3/3n2Q1/1Q1Q3b/2q3BB/Q6K w - -
>>>>>
>>>>>After some time, I tried again one of your test positions. Here is the result of
>>>>>Yace:
>>>>>
>>>>> 1762817 26.780 17.37 1t 1.Qcxc7+ Nxc7 2.Qdxc2 Qbxa5 3.Qxa5 Qxh6 4.Qxf8
>>>>> Bxg4 5.Qxa7+H Kxa7H 6.Bxb7H {1662}
>>>>> 1972903 29.917 17.38 1t+ 1.Qexc7+ Nxc7 2.Qxa7+ Qxa7 3.Qxa7+ Rxa7 4.Nxf8
>>>>> Qbxd3 5.Qcxc2H Bxg2+H 6.Qcxg2H {1662}
>>>>> 2651749 39.935 17.63 1t 1.Qexc7+ Nxc7 2.Qdxc2 Qbxa5 3.Qxa5 Qxh6 4.Qxa7+
>>>>> Rxa7 5.Qxb7+ Rxb7 6.Rxf8 {1662}
>>>>> 3023320 45.345 17.63 1. 1.Qexc7+ Nxc7 2.Qdxc2 Qbxa5 3.Qxa5 Qxh6 4.Qxa7+
>>>>> Rxa7 5.Qxb7+ Rxb7 6.Rxf8 {1662}
>>>>> 3341491 50.105 18.03 2++ 1.Qexc7+ Bxc7 2.Nd7+ Nxd7 3.Bxc7+ Qxc7 4.Qbxb5+
>>>>> Nxb5 5.Qdxb5+ Qcb6 6.Qaxb6+ Qxb6 7.Rxh7 {1662}
>>>>> 3363332 50.402 Mat07 2t 1.Qexc7+ Bxc7 2.Nd7+ Nxd7 3.Qaxc7+ Qxc7
>>>>> 4.Qbxb5+ Nxb5 5.Qdxb5+ Nb6 6.Qbxb6+ Qxb6
>>>>> 7.Qxb6# {350}
>>>>> 3735698 54.286 Mat07 2. 1.Qexc7+ Bxc7 2.Nd7+ Nxd7 3.Qaxc7+ Qxc7
>>>>> 4.Qbxb5+ Nxb5 5.Qdxb5+ Nb6 6.Qbxb6+ Qxb6
>>>>> 7.Qxb6# {350}
>>>>>
>>>>>Within 5 minutes, Yace did not find a shorter mate.
>>>>>
>>>>>I did not try with default pareamters at all, because I suspected an explosion
>>>>>in quiescensce search - quite normal for the positions you send and my proogram.
>>>>>If anybody wants to reproduces with Yace, in the text interface, type qe 1,
>>>>>under most GUIs, put qe 1 into yace.ini.
>>>>>
>>>>>Please post more mate problems, but perhaps you might want to consider, that
>>>>>usually people don't have 10 or more queens available to set up the position on
>>>>>a real chess board.
>>>>>
>>>>>Regards,
>>>>>Dieter
>>>>
>>>>If you looked through this position by brute force, please say me what was
>>>>average nodes/second rate for this position.
>>>>
>>>>Recently, I speeded my mate solver and installed in the same time NPS counter.
>>>>Was surprised by finding that NPS is very low. It is usually somewhere between
>>>>35k and 120K on my AMD 400Mhz.
>>>>
>>>>Cheers,
>>>>Leonid.
>>>
>>>It is easy to calculate the number of nodes per second.
>>>The following information was posted:
>>>3735698 54.286 Mat07
>>
>>>It means that the number of nodes per second is 3735698/54.286.
>>>I guess that the hardware is also similiar to your hardware(I rememeber that
>>>Dieter use something similiar to your hardware).
>>
>>Thanks, Uri, but it is still not 100% clear. NPS is just one number and not two.
>>So what is the first number (3735698)? Total number of nodes seen?
>
>Yes
>
> And the
>>second one (54286 or 54.286?) ? Nodes seen in one second?
>
>54.286 is the total time.
Before I thought that 3 number indicate time.
> And was the search
>>done by brute force or by selective? This last question is not that important
>>but still interesting for me to know.
>
>Selective search because I know that the following line means that yace only
>finished 2 iterations and it means that the depth is 2 plies+ extensions
>
>Mat07 2. 1.Qexc7+ Bxc7 2.Nd7+ Nxd7 3.Qaxc7+ Qxc7
>
>Uri
Thanks, Uri! Now it became clear.
Leonid.
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