Author: William Penn
Date: 05:14:17 02/03/04
Go up one level in this thread
On February 03, 2004 at 08:09:52, William Penn wrote: >On February 03, 2004 at 04:32:35, Matthias Gemuh wrote: > >> >> >>Zied Haddad seems to be unable to connect to CCC from Tunesia. >>He seeks to know whether others have encountered a Shredder 8 problem he has: >> >>after playing many games in a row without clearing hash tables, Shredder 8 >>starts messing and missing even mate in 1, till hash tables are cleared. >> >>[http://f50.parsimony.net/forum200321/messages/5855.htm] >> >>/Matthias >>(message posted on Zied's request) > >You may be right. I'm not sure yet, but I will start clearing the hash tables >before each analysis and see if it makes a difference. Note that I only run >Shredder 8 in infinite analysis mode for a long time to analyze positions. >Here's an example where the analysis ran for over 6 hours. The last line it >burped out (after 05:35:47) starts playing "giveaway chess" fairly soon. I'm >using an XP 2400+ processor, 1GB RAM, 512MB hash, Shredder 8 in the native CB >GUI with all default settings. > [D] 3r2k1/5pp1/2RP3p/pp1p4/8/4P3/PP4PP/6K1 w - - 0 1 > >Analysis by Shredder 8: > >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 f5 29.Kf3 Kf7 30.Kf4 Ke6 31.d7+ Kxd7 32.Rb6 b4 33.Rg6 h5 34.Rxg7+ Ke8 > ² (0.52) Depth: 18/18 00:00:00 >28.Kf2 b4 29.Ra6 f6 30.a3 bxa3 31.bxa3 Kf7 32.Rxa5 Rxd6 33.Ra7+ Kg6 34.h4 f5 >35.Kf3 d4 36.h5+ Kxh5 37.exd4 Rxd4 38.Rxg7 > ± (0.73) Depth: 18/31 00:00:08 3430kN >28.Kf2 f6 29.Ke2 Kf7 30.Rc7+ Kg6 31.Rc5 Rxd6 32.Rxb5 a4 33.Kd3 Kf7 34.Rb7+ Kg6 >35.Rb4 Ra6 36.Rb5 a3 37.b4 Ra4 38.Kd4 > ± (0.91) Depth: 19/34 00:00:29 12077kN >28.Kf2 f6 29.Ke2 Kf7 30.Rc7+ Kg6 31.Rc5 Rxd6 32.Rxb5 a4 33.Kd3 h5 34.g3 f5 >35.Kd4 Kf6 36.Rxd5 Rb6 37.Kc3 g5 38.Rd4 > ± (0.98) Depth: 20/36 00:00:45 17838kN, tb=1 >28.Kf2 f6 29.Ke2 Kf7 30.Rc7+ Kf8 31.Rc5 Rxd6 32.Rxb5 a4 33.Kd3 Ke7 34.Rb4 Ra6 >35.Rb7+ Ke6 36.Rxg7 Rb6 37.Kc3 Rc6+ 38.Kb4 Rc4+ 39.Kb5 Rc2 40.Kxa4 Rxb2 41.a3 > ± (0.99) Depth: 21/35 00:01:05 26108kN, tb=2 >28.Kf2 f6 29.Ke2 Kf7 30.Rc7+ Kg6 31.d7 Kf7 32.Kd3 Ke6 33.Kd4 b4 34.Ra7 Rxd7 >35.Rxd7 > ± (0.96) Depth: 22/40 00:01:47 43375kN, tb=7 >28.Kf2 f6 29.Ke2 Kf7 30.Rc7+ Kg6 31.Rc5 Rxd6 32.Rxb5 a4 33.Kd3 Kf7 34.Rb4 Ra6 >35.Rb7+ Ke6 36.Rxg7 Ke5 > ± (0.99) Depth: 23/42 00:02:40 64777kN, tb=49 >28.Kf2 b4 29.Kf3 f6 30.e4 dxe4+ 31.Kxe4 Re8+ 32.Kd4 Re2 33.Rc8+ Kf7 34.Kd5 Rd2+ >35.Kc6 Rc2+ 36.Kd7 Rxg2 37.Rc7 f5 38.Kc8+ Ke6 39.d7 Rxb2 40.d8Q a4 > ± (0.98) Depth: 24/57 00:06:28 155789kN, tb=789 >28.Kf2 f6 29.Ke2 Kf7 30.Rc7+ Kf8 31.Rc5 Rxd6 32.Rxb5 a4 33.Kd3 g6 34.Rb4 Ra6 >35.Kd4 Ra5 36.Rb7 f5 > ± (0.98) Depth: 25/58 00:12:20 295963kN, tb=3828 >28.Kf2 f6 29.Ke2 Kf7 30.Rc7+ Kf8 31.Rc5 Rxd6 32.Rxb5 a4 33.Kd3 g6 34.Rb4 Ra6 >35.Kd4 Ra5 36.Rb7 f5 37.h3 Kg8 38.Ke5 h5 > ± (0.92) Depth: 26/48 00:19:07 460372kN, tb=7670 >28.Kf2 f5 29.b3 a4 30.Kf3 Kf7 31.Kf4 Ke6 32.d7+ Kxd7 33.Rg6 Re8 34.bxa4 Re4+ >35.Kxf5 Rxa4 36.Ke5 Rxa2 37.Kxd5 Ke7 38.Rxg7+ Kf6 39.Rg3 Rc2 > ± (0.77) Depth: 27/53 00:51:14 1214622kN, tb=34388 >28.Kf2 f5 29.b3 a4 30.b4 a3 31.Rb6 Kf7 32.Rxb5 Rxd6 33.Rb7+ Kf6 34.b5 d4 35.Ra7 >d3 36.Ke1 d2+ 37.Kd1 Rd5 38.Ra6+ Ke5 39.b6 > ± (0.86) Depth: 28/54 01:44:11 2437590kN, tb=84220 >28.Kf2 f5 29.b3 a4 30.b4 a3 31.Rb6 Kf7 32.Rxb5 Rxd6 33.Rb7+ Kf6 34.b5 d4 35.Ra7 >d3 36.Ke1 d2+ 37.Kd1 Rd5 38.Ra6+ Ke5 39.b6 > ± (0.75) Depth: 29/59 02:32:46 3587439kN, tb=134462 >28.Kf2 f5 29.Ke1 a4 30.Ke2 Kf7 31.g4 fxg4 32.Rc4 dxc4 33.b3 axb3 34.Kd2 bxa2 >35.d7 a1Q 36.h3 gxh3 37.Ke2 > ² (0.67) Depth: 30/57 05:35:47 7919282kN, tb=472425 > >WP P.S. I forgot. That's with all 3-4-5 piece endgame tablebases active. WP
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