Author: Uri Blass
Date: 02:45:07 10/29/01
Go up one level in this thread
On October 29, 2001 at 04:05:08, Tony Werten wrote: >On October 28, 2001 at 21:06:11, Robert Hyatt wrote: > >>On October 28, 2001 at 18:20:43, Bas Hamstra wrote: >> >>>Again many bizar events. While discussing how boring and anti-positional Tiger >>>usually plays, with Jeroen Noomen, during the game Tao-CT, CT shot a h-pawn >>>through Tao's left eye. End of discussion. Well, let's call the thing an >>>idiot-savant, that's as far as I can go. Newcomer is EEC that does not use any >>>form of AlphaBeta at all. The author tried to explain the concept to me, but I'm >>>not sure I understand. Each move it plays a couple of shallow "matches" against >>>itsself and some kind of pattern matching is involved. Eventually that leads to >>>"votes" for different moves. The author says it has won some Blitz games against >>>GNU. >>> >>>Also new is "Gadget" from Hans Zijdenbos, written in Basic. Since it is brand >>>new, it has many things *not*. It has no hashtable, no pondering, no nullmove >>>and believe it or not, no quiescence search. Very little evaluation. Now can >>>that play chess? Amazingly, it does. Imagine Gadget searching 6-7 ply and Tao >>>12-13 ply, basically twice as deep. Yet it kept Tao negative for over twenty >>>moves, with sound play. Cock de Gorter said the same happened during >>>Crafty-Gadget. You would almost expect non nullmovers find positional holes in >>>the nullmove search or something. >>> >>>During a deep technical discussion with Johan de Koning whether to analyze mates >>>and countermates in the evaluation function or not, Jeroen Noomen drops by: >>>"aha, a rabbit". Apparently an enemy knight at h7, that can't move, is a rabbit. >>>We didn't get it, what do rabbits usually do? We could think of two things: a) >>>multiply and b) disappear in a hole. Since there were no minor promotions >>>possible in the foreseeable future and the rabbit finally disappeared in h7 I >>>wouldn't be surprised if b) has something to do with it. >>> >>>Well, Tao scored 3 out of 6 so far, on a PIII-500. Should have won against Ant, >>>which was positionally manoevred into a corner quite nicely, but alas, fell into >>>the "impotent pair" trap which I have no code for: bishop+unpromotable pawn, and >>>it became a draw. >>> >>>Finally: what's the matter with Crafty? It has the fastest hardware of all, but >>>seems to do relatively poorly, what's the matter? The new SE stuff, or what? >>> >>>TooTheLoo, >>>Bas. >> >>1. Does Crafty _really_ have the fastest hardware there? That's hard to >>believe with lots of 1.4 gig Dual AMD machines cheaply available. But in any >>case, it is possible. A dual 1.4 is faster than a quad-700 for Crafty, however, >>as the quad loses a bit more to overhead... > >Crafty doesn't have the fastest hardware but it's still quite fast. In the >endgame Crafty - XiniX I was outsearching Crafty several times by 3 to 5 ply on >a celeron 700 ! Unfortunately it wasn't enough to win, but it does seem to >indicate something is wrong in Crafty's endgame. XiniX had no problem searching >the same depth. It is possible that crafty does more extensions Here is some comparison between Crafty18.10(Crafty18.12) and Deep Fritz depthes and you can see that Deep Fritz outsearch Crafty by more than 3 plies(Crafty needed 17815 nodes to get depth 15 when Deep fritz needed less nodes to get depth 18). The difference is even bigger with longer times Deep Fritz gets depth 21 with less nodes than the number of nodes that Crafty18.12 needs to get depth 17 Xinix - Crafty 18.13 [D]8/5p2/2k1b3/1pp2p2/5P2/2P1P3/8/R3K3 b - - 0 1 Analysis by Crafty 18.10: 46...Kd5 = (0.12) Depth: 1/4 00:00:00 46...Kd5 47.Ra7 ² (0.45) Depth: 2/4 00:00:00 46...f6 47.Ke2 ² (0.41) Depth: 2/4 00:00:00 46...f6 47.Rd1 Bc4 ² (0.27) Depth: 3/6 00:00:00 46...f6 47.Ra6+ Kd5 48.Rb6 Bd7 49.Rxf6 ± (0.91) Depth: 4/7 00:00:00 46...Bd5 47.Ra7 Kd6 48.Kd2 ² (0.57) Depth: 4/7 00:00:00 46...b4 47.cxb4 cxb4 48.Rc1+ Kd6 49.Kd2 = (0.21) Depth: 4/7 00:00:00 46...b4 47.cxb4 cxb4 48.Rc1+ Kd5 49.Rd1+ Kc4 50.Kd2 = (-0.03) Depth: 5/10 00:00:00 46...b4 47.cxb4 cxb4 48.Rc1+ Kd5 49.Rd1+ Kc4 50.Rd4+ Kc3 51.Ke2 = (-0.09) Depth: 6/12 00:00:00 8kN 46...b4 47.cxb4 cxb4 48.Kd2 b3 49.Kd3 f6 50.Rd1 ³ (-0.36) Depth: 7/12 00:00:00 20kN 46...b4 47.cxb4 cxb4 48.Rc1+ Kd6 49.Kd2 b3 50.Kd3 Bd5 51.Kd4 ³ (-0.39) Depth: 8/14 00:00:00 58kN 46...b4 47.cxb4 cxb4 48.Kd2 b3 49.Ra7 Bd5 50.Kc3 f6 51.Kb2 ³ (-0.35) Depth: 9/17 00:00:00 126kN 46...b4 47.cxb4 cxb4 48.Kd2 Kb5 49.Ra7 b3 50.Rb7+ Kc6 51.Rb4 Bd5 52.Kd3 ³ (-0.26) Depth: 10/17 00:00:01 230kN 46...b4 47.cxb4 cxb4 48.Kd2 Kc5 49.Ra5+ Kc4 50.Ra4 Kb5 51.Ra7 = (-0.25) Depth: 11/18 00:00:01 601kN 46...b4 47.cxb4 cxb4 48.Kd2 Kc5 49.Ra5+ Kc4 50.Ra4 Kb5 51.Ra7 = (-0.25) Depth: 12/23 00:00:03 1353kN, tb=2 46...b4 47.cxb4 cxb4 48.Kd2 Kc5 49.Ra7 Bd5 50.Kc1 b3 51.Kb2 = (-0.20) Depth: 13/23 00:00:06 3131kN, tb=5 46...b4 47.cxb4 cxb4 48.Kd2 Kc5 49.Ra7 Bd5 50.Kc1 b3 51.Kb2 = (-0.20) Depth: 14/24 00:00:15 7692kN, tb=29 46...b4 47.cxb4 cxb4 48.Ra5 b3 49.Kd2 Kb6 50.Re5 Kb7 51.Rb5+ Kc7 52.Kc3 Kc6 53.Rb8 = (-0.16) Depth: 15/28 00:00:33 17815kN, tb=130 (Blass, Tel-aviv 29.10.2001) Xinix - Crafty 18.13 8/5p2/2k1b3/1pp2p2/5P2/2P1P3/8/R3K3 b - - 0 1 Analysis by Deep Fritz: 46...b4 47.cxb4 ± (0.75) Depth: 1/6 00:00:00 46...b4 47.cxb4 cxb4 ± (0.75) Depth: 2/6 00:00:00 46...b4 47.cxb4 cxb4 48.Kd2 ± (0.81) Depth: 3/9 00:00:00 46...b4 47.cxb4 cxb4 48.Kd2 Bd5 ± (0.72) Depth: 4/11 00:00:00 46...b4 47.cxb4 cxb4 48.Kd2 Bd5 49.Ra8 ± (0.75) Depth: 5/12 00:00:00 1kN 46...b4 47.cxb4 cxb4 48.Rc1+ Kd5 49.Rb1 Kc4 50.Kd2 ² (0.66) Depth: 6/13 00:00:00 6kN 46...b4 47.cxb4 cxb4 48.Kd2 b3 49.Kc3 Bd5 50.Kb2 ² (0.66) Depth: 7/15 00:00:00 11kN 46...b4 47.cxb4 cxb4 48.Kd2 b3 49.Kc3 Bd5 50.Kb2 Kc5 ² (0.62) Depth: 8/16 00:00:00 26kN 46...b4 47.cxb4 cxb4 48.Kd2 b3 49.Kc3 Bd5 50.Kb2 Kc5 51.Ra7 ² (0.62) Depth: 9/18 00:00:00 51kN 46...b4 47.cxb4 cxb4 48.Kd2 Bd5 49.Ra6+ Kc5 50.Rf6 b3 51.Rxf5 b2 52.Kc2 ² (0.62) Depth: 10/20 00:00:00 119kN 46...b4 47.cxb4 cxb4 48.Kd2 Kb5 49.Kc2 Kc4 50.Rd1 Bd5 ² (0.59) Depth: 11/21 00:00:00 305kN 46...b4 47.cxb4 cxb4 48.Kd2 Kb5 49.Kc2 Kc4 50.Rd1 Bd5 51.Rd4+ Kc5 52.Kb2 ² (0.62) Depth: 12/23 00:00:00 535kN 46...Kd5! ² (0.59) Depth: 12/23 00:00:01 681kN 46...Kd5 47.Kd2 Kc4 48.Ra7 b4 49.cxb4 cxb4 50.Rc7+ Kb3 51.Kd3 Bd5 52.Kd4 ² (0.62) Depth: 13/22 00:00:01 880kN 46...Kd5 47.Kd2 Kc4 48.Ra7 b4 49.cxb4 cxb4 50.Rc7+ Kb3 51.Rb7 Bd5 52.Rd7 ² (0.56) Depth: 14/23 00:00:02 1371kN 46...Kd5 47.Kd2 Kc4 48.Kc2 Bd5 49.Rd1 Be4+ 50.Kb2 b4 51.cxb4 cxb4 52.Rd4+ ² (0.59) Depth: 15/25 00:00:03 2078kN, tb=2 46...Kd5 47.Kd2 Kc4 48.Kc2 Bd5 49.Rd1 Be4+ 50.Kb2 b4 51.cxb4 cxb4 52.Rd4+ ² (0.59) Depth: 16/27 00:00:05 3325kN, tb=7 46...Kd5 47.Kd2 Kc4 48.Kc2 Bd5 49.Rd1 Be4+ 50.Kb2 b4 51.cxb4 cxb4 52.Rd4+ ² (0.62) Depth: 17/28 00:00:09 5772kN, tb=34 46...Kd5 47.Kd2 Kc4 48.Kc2 b4 49.cxb4 cxb4 50.Rd1 Bd5 ² (0.62) Depth: 18/29 00:00:21 13070kN, tb=136 (Blass, Tel-aviv 29.10.2001) Xinix - Crafty 18.13 8/5p2/2k1b3/1pp2p2/5P2/2P1P3/8/R3K3 b - - 0 1 Analysis by Crafty 18.12: 46...Kd5 = (0.12) Depth: 1/4 00:00:00 46...Kd5 47.Ra7 ² (0.45) Depth: 2/4 00:00:00 46...f6 47.Ke2 ² (0.41) Depth: 2/4 00:00:00 46...f6 47.Rd1 Bc4 ² (0.27) Depth: 3/6 00:00:00 46...f6 47.Ra6+ Kd5 48.Rb6 Bd7 49.Rxf6 ± (0.91) Depth: 4/8 00:00:00 46...Bd5 47.Ra7 Kd6 48.Kd2 ² (0.57) Depth: 4/8 00:00:00 46...b4 47.cxb4 cxb4 48.Rc1+ Kd6 49.Kd2 = (0.21) Depth: 4/8 00:00:00 46...b4 47.cxb4 cxb4 48.Rc1+ Kd5 49.Rd1+ Kc4 50.Kd2 = (-0.03) Depth: 5/10 00:00:00 46...b4 47.cxb4 cxb4 48.Rc1+ Kd5 49.Rd1+ Kc4 50.Rd4+ Kc3 51.Ke2 = (-0.09) Depth: 6/12 00:00:00 9kN 46...b4 47.cxb4 cxb4 48.Kd2 b3 49.Kd3 f6 50.Rd1 ³ (-0.36) Depth: 7/13 00:00:00 21kN 46...b4 47.cxb4 cxb4 48.Rc1+ Kd6 49.Kd2 b3 50.Kd3 Bd5 51.Kd4 ³ (-0.39) Depth: 8/14 00:00:00 58kN 46...b4 47.cxb4 cxb4 48.Kd2 b3 49.Ra7 Bd5 50.Kc3 f6 51.Kb2 ³ (-0.35) Depth: 9/17 00:00:00 126kN 46...b4 47.cxb4 cxb4 48.Kd2 Kb5 49.Ra7 b3 50.Rb7+ Kc6 51.Rb4 Bd5 52.Kd3 ³ (-0.26) Depth: 10/19 00:00:01 232kN 46...b4 47.cxb4 cxb4 48.Kd2 Kd5 49.Ra5+ Kc4 50.Ra4 Kc5 51.Ra6 b3 52.Kc3 = (-0.20) Depth: 11/19 00:00:01 622kN 46...b4 47.cxb4 cxb4 48.Kd2 Kd5 49.Ra7 b3 50.Kd3 f6 51.Ra5+ Kd6 52.Ra6+ Ke7 53.Ra7+ Bd7 54.Rb7 = (-0.20) Depth: 12/21 00:00:03 1373kN, tb=2 46...b4 47.cxb4 cxb4 48.Kd2 Kd5 49.Kd3 b3 50.Ra6 Kc5 51.Kc3 Bd5 52.Rf6 Be6 53.Rxe6 fxe6 54.Kxb3 = (-0.20) Depth: 13/23 00:00:06 2893kN, tb=6 46...b4 47.cxb4 cxb4 48.Kd2 Kd5 49.Kd3 b3 50.Ra6 Kc5 51.Kc3 Bd5 52.Rf6 Be6 53.Rxe6 fxe6 54.Kxb3 = (-0.20) Depth: 14/25 00:00:13 6973kN, tb=34 46...b4 47.cxb4 cxb4 48.Kd2 Kd5 49.Kd3 b3 50.Ra6 Kc5 51.Kc3 Bd5 52.Rf6 Be6 53.Rxe6 fxe6 54.Kxb3 = (-0.20) Depth: 15/28 00:00:32 17169kN, tb=131 46...b4 47.cxb4 cxb4 48.Kd2 Kd5 49.Kd3 b3 50.Ra8 Kc5 51.Kc3 Bd5 52.Ra5+ = (-0.17) Depth: 16/29 00:01:13 39049kN, tb=391 46...b4 47.cxb4 cxb4 48.Kd2 Kd5 49.Kd3 b3 50.Ra8 Kc5 51.Kc3 Kc6 52.Rb8 Kc7 53.Rb4 Kd6 54.Kd4 f6 55.Rb6+ = (-0.15) Depth: 17/31 00:02:59 94625kN, tb=1283 (Blass, Tel-aviv 29.10.2001) Xinix - Crafty 18.13 8/5p2/2k1b3/1pp2p2/5P2/2P1P3/8/R3K3 b - - 0 1 rest of the Analysis by Deep Fritz: 46...Kd5 47.Kd2 Kc4 48.Kc2 b4 49.cxb4 cxb4 50.Rd1 Bd5 51.Rd4+ Kc5 52.Kb2 ² (0.62) Depth: 19/30 00:00:35 21931kN, tb=344 46...Kd5 47.Kd2 Kc4 48.Kc2 b4 49.cxb4 cxb4 50.Rd1 Bd5 51.Rd4+ Kc5 52.Kb2 ² (0.62) Depth: 20/33 00:01:05 40546kN, tb=710 46...Kd5 47.Kd2 Kc4 48.Kc2 b4 49.cxb4 cxb4 50.Rd1 Bd5 51.Rd4+ Kc5 52.Kb2 ² (0.62) Depth: 21/34 00:02:10 81679kN, tb=1529 (Blass, Tel-aviv 29.10.2001) Uri
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