Author: Stuart Cracraft
Date: 13:27:35 01/02/06
Go up one level in this thread
On January 02, 2006 at 15:35:03, William Penn wrote: >On January 02, 2006 at 13:43:35, Stuart Cracraft wrote: > >>On January 02, 2006 at 11:14:38, William Penn wrote: >> >>>On January 02, 2006 at 10:55:58, William Penn wrote: >>> >>>>On January 02, 2006 at 07:37:45, K. Burcham wrote: >>>> >>>>> >>>>>The strongest chess program ever made, opened the a-file, blocked the e5 pawn, >>>>>and went on to intimidate the 2750 opponent to resign. >>>>> >>>>>will your program open the a-file and block the e5pawn. >>>>> >>>>>Here is rybka after 5 hours. >>>>>2200mhz Athlon64 >>>>>512 hash >>>>> >>>>>Looking for this line >>>>>36. axb5 axb5 37. Be4 >>>>> >>>>> [D] r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - - 0 36 >>>>> >>>>>Rybka 1.0 Beta 32-bit: >>>>> >>>>>36.Qb6 Qe7 37.axb5 Rab8 38.Qxa6 e4 39.Qa7 Qe5 40.Qe3 Bc7 >>>>> +- (1.62) Depth: 22 00:38:29 271623kN >>>>>36.Qb6 Qe7 37.axb5 Rab8 38.Qxa6 e4 39.Qa7 Qe5 40.Qe3 Bc7 >>>>> +- (1.59) Depth: 23 01:07:07 465416kN >>>>>36.Qb6 Qe7 >>>>> ± (1.26) Depth: 24 05:14:05 1975804kN >>>>> >>>>>kburcham >>>> >>>> >>>>Rybka considers your idea as second best. Using multi-PV mode... >>>> >>>>[D]r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - - >>>> >>>>Engine: Rybka 1.01 Beta 7 32-bit (704 MB) >>>>by Vasik Rajlich >>>> >>>>17 5:20 +2.02 1.Qb6 Rd8 2.Be4 Be7 3.axb5 Rd6 4.Qa5 Bd8 >>>> 5.Qa4 a5 6.bxa5 Bxa5 7.Kh2 Qd7 (33.664.377) 107 >>>> >>>>17 5:55 +1.23 1.axb5 axb5 2.Be4 Rcb8 3.Ra6 Qd8 >>>> 4.Kh2 Rxa6 5.Rxa6 Qd7 6.Kg3 Kf7 >>>> 7.Qe3 Rb7 (37.609.781) 108 >>>> >>>>17 6:12 +0.60 1.Be4 a5 2.axb5 axb4 3.Rxa8 Rxa8 >>>> 4.Ra6 Qd8 5.Qa2 Rxa6 6.bxa6 bxc3 >>>> 7.Kh2 Qa8 (39.353.897) 108 >>>> >>>> >>>>P.S. >>>>I have no prior experience trying to import FEN into Shredder Classic 9.1 GUI. >>>>The "0 36" was truncated from FEN when I imported this position from an .epd >>>>file. I don't know if that has any effect on the analysis, nor if there is a >>>>better way to import FEN into that GUI. >>>>WP >>> >>>I let it run a little longer and the gap between the first two PVs is narrowing. >>>Perhaps your idea would come out on top eventually, with a superfast computer or >>>very long run times. >>> >>> >>>r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - - >>> >>>Engine: Rybka 1.01 Beta 7 32-bit (704 MB) >>>by Vasik Rajlich >>> >>>20 25:13 +1.70 1.Qb6 Qe7 2.axb5 Rab8 3.Qxa6 e4 >>> 4.Qa7 Qe5 5.Qe3 Re8 6.b6 Qh2+ 7.Kf1 Bf4 (160.548.890) 108 >>> >>>20 28:22 +1.27 1.axb5 axb5 2.Be4 Rcb8 3.Ra6 Kf7 >>> 4.Ra7+ Kg8 5.Kh2 Qd8 6.Kg3 Rxa7 >>> 7.Qxa7 Bc7 (181.434.497) 109 >>> >>>20 30:42 +0.67 1.Be4 a5 2.axb5 axb4 3.Rxa8 Rxa8 >>> 4.Ra6 Qd8 5.Qa2 Rxa6 6.bxa6 Bc5+ >>> 7.Kh2 b3 (196.471.231) 109 >>> >>>WP >> >>I believe Be4 was the position that DB played that gave Kasparov pause. >> >>So to find that in 30 minutes by Rybka is a good accomplishment. >> >>Another feather in its hat. > >Sorry, I should have been more clear. >That's multi-PV mode, showing 3 parallel PVs at level 20. >According to Rybka, 1.Be4 is the third-best move. >WP I own Rybka and am not familiar with this feature, spending most time playing my (hack) program. What is "multi-PV" mode of Rybka do?
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