Author: Graham Banks
Date: 23:20:45 01/03/06
Go up one level in this thread
On January 02, 2006 at 17:26:34, William Penn wrote: >On January 02, 2006 at 16:27:35, Stuart Cracraft wrote: >>>>>[D]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? > >It's used in analysis (infinite) mode. When an analysis is running, you can >press a key to show multiple lines. Each GUI has its own method. With the >Chessbase/Fritz GUI, press the "+" key to increase the number of lines, the "-" >key to decrease them. With the Shredder Classic GUI, press the "f6" key for more >lines, the "f5" key for less. It's useful when you want to see how the engine is >thinking, which you can't tell when it is only displaying one line (PV). > >I still long for the early days when Dan and Kathe Spracklen's Sargon had a >beautiful cascading picture window into the complexities of the analysis in >progress. I haven't seen anything comparable since then, but would encourage >chess authors to consider it. So what(?), if it slows down the engine 5%, or >whatever! I like to watch the gears turn!! :) >WP Hi William, I particularly enjoyed the thinking displayed by Chessmaster - an output of the thinking variation in text plus the expected position at the end shown on a separate small board. Graham.
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