Author: Duncan Roberts
Date: 14:30:36 01/10/05
Go up one level in this thread
On January 10, 2005 at 17:20:15, Dann Corbit wrote: >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. I do not follow. probably no material gain in 34 moves (what I said)is not so different that it is unlikely there is no material gain in 34 moves (what you said) dunacn > >>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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