Author: Dann Corbit
Date: 14:20:15 01/10/05
Go up one level in this thread
On January 10, 2005 at 17:02:40, Duncan Roberts wrote: >On January 10, 2005 at 15:18:09, Andrew Williams wrote: > >>Hi, >> >>Last Friday (7th January 2005) I started PM on a material-only search from the >>starting position. This was in response to a request from Duncan Roberts: >> >>http://www.talkchess.com/forums/2/message.html?151665 >> >>On Saturday 8th, I posted a progress report: >> >>http://www.talkchess.com/forums/2/message.html?151865 >> >>I was hopeful that PM would finish 35 plies over the weekend, but it didn't >>happen. When I got up this morning, there had been no progress since Saturday >>afternoon and I didn't want to leave my PC on all day. PM had had 43 hours since >>it finished ply 34, but although it was still burning CPU time, there was no >>more output. The last I heard from PM was: >> >>30= +0.00 00:28:36.541087088735 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 >> 5.b4 axb4 6.cxb4 e6 7.Bb2 Nf6 >> 8.b5 cxb5 9.axb5 Rxa1 10.Bxa1 g6 >> 11.Nc3 d6 12.Nf3 >>31> +0.00 01:00:13.772083574223 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 5.b4 axb4 >> 6.cxb4 e6 7.Bb2 Nf6 8.b5 cxb5 9.axb5 Rxa1 >> 10.Bxa1 g6 11.Nc3 d6 12.Nf3 Qe7 13.d4 >>31< +0.01 01:09:45.04-1811636011 1.a3 >>31= +0.00 01:09:45.04-1811636011 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 5.b4 axb4 >> 6.cxb4 e6 7.Bb2 Nf6 8.b5 cxb5 9.axb5 Rxa1 >> 10.Bxa1 g6 11.Nc3 d6 12.Nf3 Qe7 13.d4 >>32> +0.00 02:09:55.47 303672321 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 5.b4 axb4 >> 6.cxb4 e6 7.Bb2 Nf6 8.b5 cxb5 9.axb5 Rxa1 >> 10.Bxa1 g6 11.Nc3 d6 12.Nf3 Qe7 13.d4 Kd8 >>32< +0.01 02:27:21.531056234340 1.a3 >>32= +0.00 02:27:21.531056234340 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 5.b4 axb4 >> 6.cxb4 e6 7.Bb2 Nf6 8.b5 cxb5 9.axb5 Rxa1 >> 10.Bxa1 g6 11.Nc3 d6 12.Nf3 Qe7 13.d4 Kd8 >>33> +0.00 05:02:57.082077668534 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 5.b4 axb4 >> 6.cxb4 e6 7.Bb2 Nf6 8.b5 cxb5 9.axb5 Rxa1 >> 10.Bxa1 g6 11.Nc3 d6 12.Nf3 e5 13.e3 >>33< +0.01 05:41:54.93-634541739 1.a3 >>33= +0.00 05:41:55.06-634541739 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 5.b4 axb4 >> 6.cxb4 e6 7.Bb2 Nf6 8.b5 cxb5 9.axb5 Rxa1 >> 10.Bxa1 g6 11.Nc3 d6 12.Nf3 e5 13.e3 >>34> +0.00 11:36:50.42-1671302356 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 5.b4 axb4 >> 6.cxb4 e6 7.Bb2 Nf6 8.b5 cxb5 9.axb5 Rxa1 >> 10.Bxa1 g6 11.Nc3 d6 12.Nf3 e5 13.e3 Ke7 >> 14.Qe2 >>34< +0.01 13:09:24.491898767447 1.a3 >>34= +0.00 13:09:24.491898767447 1.a3 a6 2.a4 a5 3.b3 b6 4.c3 c6 5.b4 axb4 >> 6.cxb4 e6 7.Bb2 Nf6 8.b5 cxb5 9.axb5 Rxa1 >> 10.Bxa1 g6 11.Nc3 d6 12.Nf3 e5 13.e3 Ke7 >> 14.Qe2 >> >>I'm posting this output purely for completeness. The node counts overflowed on >>ply 31 and the PVs are probably pretty nonsensical. >> >>Andrew > > >thanks for doing it. No one has ever taken it before to this level, so even >though the chances were as you say slight, it was still imo worth doing. >there is also a record here of what you have done in case anybody wants to take >this further. > >re ricardo . imo what ever happens you have added to the body of chess >knowledge. > >If you find nothing then there is added likelihood maybe probability there is no >material gain in 34 moves. No. That is not what it shows. It only shows that it is unlikely, because null move pruning was used. >if you find a material gain, it can be investigated further with a regular chess >engine to make sure that the gain is genuine, and black has no compensation, >positional or otherwise. > > > >Is there any chance you will give uri's 6 move start a try in the future ? > > >duncan
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