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Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM]
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Jesús Muñoz



Joined: 13 Jul 2011
Posts: 688
Location: Madrid, Spain.
PostPost subject: Perft count of the Petrov defence.    Posted: Fri Aug 26, 2011 9:24 pm Reply to topic Reply with quote
Hello Steven:

I am sorry that hurricane difficults everything. Your Perft count goes so fast IMO, congratulations. But I want to ask something: when Perft(13) count started, you uploaded the complete results (drafts 8, 9, ...) in your web on fcr1 file, but now there is nothing new uploaded. I think these numbers were useful to people that run Monte Carlo methods (and other kinds of methods) for Perft(13) estimations, and these people would thank you if you update intermediate results again (if possible). If not, your 24/7 count is an enough reason for gratitude.

I wanted to add my grain of salt and I run the draft 9 of the Petrov defence with the Perft counter JetChess 1.0.0.0 by Thomas Zipproth (using 1024 MB of hash). The result is here:

[d] rnbqkb1r/pppp1ppp/5n2/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - [/d]
BR BN BB BQ BK BB    BR
BP BP BP BP :: BP BP BP
   ::    ::    BN    ::
::    ::    BP    ::    
   ::    :: WP ::    ::
::    ::    :: WN ::    
WP WP WP WP    WP WP WP
WR WN WB WQ WK WB :: WR


18,001,998,634,639 (move pathes after 9 half moves).

The 27 drafts 8 of the subsequent position are here:

Code:

  1  Qd1-e2  647040707276
  2  Rh1-g1  490829624768
  3  Bf1-e2  568873960495
  4  Bf1-d3  561059003006
  5  Bf1-c4  848606605153
  6  Bf1-b5  606510996090
  7  Bf1-a6  658638271466
  8  Nb1-a3  536012964936
  9  Nb1-c3  678243895985
 10  Nf3-d4  973927879849
 11  Nf3*e5  1141766008376
 12  Nf3-g5  768354401415
 13  Nf3-h4  665523883989
 14  Nf3-g1  606215610223
 15   a2-a3  513813119181
 16   a2-a4  637345249039
 17   b2-b3  600934226082
 18   b2-b4  556993717758
 19   c2-c3  644366970275
 20   c2-c4  513136570822
 21   d2-d3  728364218922
 22   d2-d4  1359941729389
 23   g2-g3  590435349618
 24   g2-g4  543336242926
 25   h2-h3  584243924514
 26   h2-h4  601336505861
 27  Ke1-e2  376146997225

Total:   18001998634639

Time: 24749.052 s


I do not know if you have calculated this draft before. If so, my count should be a verification; if not, someone (mainly you) has to verify me. Before starting my count, I estimated (in view of other shorter counts I did) that speed would be between 700 MN/s and 725 MN/s; it was around 727.4 MN/s finally. I wonder how many minutes takes your machine (and your programme) counting this draft 9... I guess that few minutes (with a very high speed in terms of nodes/second). As you see, my count is not practical because this draft 9 took 6:52:29.052 and there are 72,078 different draft 9 positions for Perft(13). But as I said before, I wanted to add my (insignificant) grain of salt.

Good luck with hurricanes and other incidentals! Please keep the good work: it is very much appreciated.

Regards from Spain.

Ajedrecista.
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Subject Author Date/Time
Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Wed Aug 03, 2011 2:46 am
      Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Wed Aug 03, 2011 3:06 am
      After 10 hours Steven Edwards Wed Aug 03, 2011 12:22 pm
      Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Wed Aug 03, 2011 12:51 pm
            Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Vincent Diepeveen Sat Nov 05, 2011 6:45 pm
                  Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Sat Nov 05, 2011 10:37 pm
      After 24 hours Steven Edwards Thu Aug 04, 2011 2:15 am
      After 38 hours Steven Edwards Thu Aug 04, 2011 4:16 pm
      After 76 hours Steven Edwards Sat Aug 06, 2011 6:31 am
      After 136 hours Steven Edwards Mon Aug 08, 2011 6:38 pm
      After 7 days Steven Edwards Wed Aug 10, 2011 3:14 am
            Re: After 7 days H.G.Muller Fri Aug 12, 2011 9:06 am
                  Re: After 7 days Steven Edwards Fri Aug 12, 2011 10:53 pm
                        Re: After 7 days Ricardo Barreira Fri Aug 12, 2011 11:45 pm
                        Re: After 7 days H.G.Muller Sat Aug 13, 2011 7:36 am
      After 12.5 days Steven Edwards Mon Aug 15, 2011 2:48 pm
      First power failure after almost 17 days Steven Edwards Fri Aug 19, 2011 9:46 pm
            Re: First power failure after almost 17 days Steven Edwards Sun Aug 21, 2011 2:13 pm
                  Re: First power failure after almost 17 days Vincent Lejeune Mon Aug 22, 2011 7:53 am
                        Re: First power failure after almost 17 days Steven Edwards Mon Aug 22, 2011 8:12 am
      16/400 draft 11 records Steven Edwards Mon Aug 22, 2011 5:36 am
      Another power failure Steven Edwards Thu Aug 25, 2011 7:36 pm
            Re: Another power failure Steven Edwards Fri Aug 26, 2011 6:51 pm
            Perft count of the Petrov defence. Jesús Muñoz Fri Aug 26, 2011 9:24 pm
                  Re: Perft count of the Petrov defence. Steven Edwards Sat Aug 27, 2011 12:20 am
                        Re: Perft count of the Petrov defence. Jesús Muñoz Sat Aug 27, 2011 9:26 am
                              Re: Perft count of the Petrov defence. Steven Edwards Sat Aug 27, 2011 10:52 am
                  Re: Perft count of the Petrov defence. Steven Edwards Sat Aug 27, 2011 11:51 pm
                        Thank you very much! Jesús Muñoz Sun Aug 28, 2011 10:43 am
                        The 22nd draft 11 record Steven Edwards Sun Aug 28, 2011 11:00 am
      The 23rd draft 11 record Steven Edwards Sun Aug 28, 2011 3:24 pm
      After 27 days Steven Edwards Tue Aug 30, 2011 5:11 pm
      The 24th draft 11 record Steven Edwards Tue Aug 30, 2011 10:25 pm
      After one month Steven Edwards Sat Sep 03, 2011 10:57 am
      Draft 11 records number 25 and 26 Steven Edwards Sun Sep 04, 2011 7:20 pm
            Draft 11 records number 27 and 28 Steven Edwards Mon Sep 05, 2011 3:19 am
                  Draft 11 records number 29 and 30 Steven Edwards Mon Sep 05, 2011 1:19 pm
                        Draft 11 record number 31 Steven Edwards Mon Sep 05, 2011 6:39 pm
                              Draft 11 record number 32 Steven Edwards Wed Sep 07, 2011 6:13 pm
      Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Thu Sep 08, 2011 9:40 pm
            Re: Thank you. Jesús Muñoz Fri Sep 09, 2011 8:48 am
            Draft 11 counts Steven Edwards Fri Sep 09, 2011 6:28 pm
                  About the branching factors... Jesús Muñoz Fri Sep 09, 2011 7:30 pm
      No more MobileMe data hosting Steven Edwards Tue Sep 13, 2011 11:15 am
      Draft 11 records number 34 and 35 Steven Edwards Wed Sep 14, 2011 3:35 pm
      Draft 11 records number 36, 37, and 38 Steven Edwards Thu Sep 15, 2011 6:59 pm
      Draft 11 record number 39 Steven Edwards Fri Sep 16, 2011 4:47 am
      Draft 11 record number 40 Steven Edwards Fri Sep 16, 2011 8:02 am
      After 47 days Steven Edwards Mon Sep 19, 2011 10:34 am
            Output from the top status utility Steven Edwards Mon Sep 19, 2011 5:30 pm
      After 51 days Steven Edwards Fri Sep 23, 2011 1:08 pm
            Re: After 51 days Steven Edwards Fri Sep 23, 2011 1:38 pm
                  Re: Verification of large draft 8 record. Jesús Muñoz Fri Sep 23, 2011 5:05 pm
                        Try one of these Steven Edwards Fri Sep 23, 2011 6:55 pm
                              Re: Try one of these Paul Byrne Sat Sep 24, 2011 3:11 am
                                    Re: Try one of these Steven Edwards Sat Sep 24, 2011 6:23 am
                                          Re: Try one of these Paul Byrne Sat Sep 24, 2011 3:41 pm
                              Re: Try one of these Paul Byrne Sat Sep 24, 2011 5:40 pm
      Draft 11 record number 41 Steven Edwards Sat Sep 24, 2011 6:07 pm
      Draft 11 record number 42 Steven Edwards Sun Sep 25, 2011 8:18 am
      Draft 11 record number 43 Steven Edwards Mon Sep 26, 2011 12:09 am
      Draft 11 record numbers 44 and 45 Steven Edwards Mon Sep 26, 2011 12:32 pm
      Draft 11 record number 46 Steven Edwards Mon Sep 26, 2011 11:16 pm
      Draft 11 record number 47 Steven Edwards Tue Sep 27, 2011 9:41 am
      Draft 11 record number 48 Steven Edwards Wed Sep 28, 2011 11:43 pm
      After 61 days of calculation Steven Edwards Tue Oct 04, 2011 12:49 am
      Draft 11 record number 49 Steven Edwards Sun Oct 09, 2011 5:31 pm
      Draft 11 record number 50 Steven Edwards Mon Oct 10, 2011 1:44 am
      Draft 11 record number 51 Steven Edwards Mon Oct 10, 2011 4:53 pm
      Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Terry McCracken Tue Oct 11, 2011 2:19 pm
            Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Tue Oct 11, 2011 3:09 pm
                  Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Terry McCracken Tue Oct 11, 2011 3:44 pm
                        Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Tue Oct 11, 2011 5:46 pm
                              Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Terry McCracken Tue Oct 11, 2011 6:06 pm
                                    Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Wed Oct 12, 2011 9:31 am
                                          Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Terry McCracken Wed Oct 12, 2011 11:00 pm
      Draft 11 record numbers 52 and 53 Steven Edwards Tue Oct 11, 2011 3:12 pm
      Draft 11 record number 54 Steven Edwards Wed Oct 12, 2011 9:11 am
      Draft 11 record number 55 Steven Edwards Thu Oct 13, 2011 2:21 am
      Draft 11 record number 56 Steven Edwards Thu Oct 13, 2011 5:19 am
      After 79 days Steven Edwards Sat Oct 22, 2011 3:13 am
      Another restart Steven Edwards Tue Nov 01, 2011 11:37 pm
            Re: Another restart Steven Edwards Wed Nov 02, 2011 5:29 am
      Draft 11 record number 57 Steven Edwards Thu Nov 03, 2011 10:51 pm
      Draft 11 record number 58 Steven Edwards Sun Nov 06, 2011 1:21 pm
      Draft 11 record number 59 Steven Edwards Tue Nov 08, 2011 1:51 pm
      Draft 11 record number 60 Steven Edwards Tue Nov 08, 2011 6:03 pm
      Draft 11 record number 61 Steven Edwards Wed Nov 09, 2011 10:30 am
      Draft 11 record number 62 Steven Edwards Thu Nov 10, 2011 4:00 am
      Draft 11 results summary: records 1-50 Steven Edwards Fri Nov 11, 2011 9:56 am
      Draft 11 record number 63 Steven Edwards Sat Nov 12, 2011 9:55 am
      Draft 11 record number 64 Steven Edwards Sat Nov 12, 2011 2:11 pm
      After 15 weeks Steven Edwards Fri Nov 18, 2011 3:15 am
      After 16 weeks Steven Edwards Thu Nov 24, 2011 8:37 am
      After 17 weeks Steven Edwards Thu Dec 01, 2011 2:46 pm
      Draft 11 record number 65 Steven Edwards Mon Dec 05, 2011 6:32 pm
            Re: Draft 11 record number 63 Matthew R. Brades Tue Dec 06, 2011 1:07 pm
                  Re: Draft 11 record number 63 Steven Edwards Tue Dec 06, 2011 1:27 pm
      Draft 11 record number 66 Steven Edwards Tue Dec 06, 2011 11:51 pm
      Draft 11 record number 67 Steven Edwards Wed Dec 07, 2011 1:08 am
      Draft 11 record number 68 Steven Edwards Wed Dec 07, 2011 4:25 am
      Draft 11 record number 69 Steven Edwards Wed Dec 07, 2011 10:35 am
      After 18 weeks Steven Edwards Thu Dec 08, 2011 11:42 am
      Draft 11 record number 70 Steven Edwards Thu Dec 08, 2011 2:35 pm
      Draft 11 record number 71 Steven Edwards Fri Dec 09, 2011 5:42 am
      Re: Perft(13) [3.4 GHz Core i7-2600, 16 GB RAM] Steven Edwards Sat Dec 10, 2011 1:37 am
      After 19 weeks Steven Edwards Thu Dec 15, 2011 5:16 am
      Perft(11) of 1.- f3, f6. Jesús Muñoz Fri Dec 16, 2011 5:17 pm
            Re: Perft(11) of 1.- f3, f6. Steven Edwards Fri Dec 16, 2011 6:03 pm
      After 20 weeks Steven Edwards Thu Dec 22, 2011 10:02 am
            'MonteCarlo Perft' vs. 'exact Perft'. Jesús Muñoz Fri Dec 23, 2011 6:21 pm
      After 21 weeks Steven Edwards Thu Dec 29, 2011 5:56 am
      Draft 11 record numbers 73 through 80 Steven Edwards Wed Jan 04, 2012 2:29 am
      After 22 weeks Steven Edwards Thu Jan 05, 2012 5:24 am
      After 23 weeks Steven Edwards Thu Jan 12, 2012 5:10 am
      Draft 11 results available for download Steven Edwards Tue Jan 17, 2012 10:41 am
      After 24 weeks Steven Edwards Thu Jan 19, 2012 6:30 am
      After 25 weeks Steven Edwards Thu Jan 26, 2012 5:08 am
      End of thread Steven Edwards Sun Jan 29, 2012 4:44 am
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