Author: Uri Blass
Date: 13:18:42 09/15/01
Go up one level in this thread
On September 15, 2001 at 15:56:06, ALI MIRAFZALI wrote: >Although much has been said about moves like Be4 in game 2 of the second match >with Kasparov and h5 in game 5 of the second match because of the great >controversy that these moves have generated;the positions that happen >after these moves are not a good comparison test for seeing if current >commercial programs running on ordinary machines play at or beyond the level >of deep Blue.Let me first turn my attention to the first match game 5.At move >29 Deep blue plays29.g3? Kasparov says that after 29.Ne2 Rxe2 30.Qxe2 Qa1+ >31.Nc1 White may be able to hold but the chances are still in Black's favor. >Interestingly Fritz6 chooses 29.Ne2 in this position(under 3 minutes 450MHZ). >In the same game at move 12 Deep blue plays 12.Rae1 .This is the case of moving >the Wrong rook.In the same position Fritz6 plays Rfe1 instantly.There is no >doubt that these positions prove that chess Knowelgde is very important for >chess programs.Since the Hardware that the deep Blue program was running on >was more powerful than anything commercial programs are running on even today The position is easy for programs with the relevant chess knowledge but can be also solved by search for programs without chess knowedge. I remember from a post of the programmer of yace that yace could find 29.Ne2 after some hours by search when g3 failed low for kasparov's move. I believe that the search algorithm of Deep blue were simply inferior than the search algorithm of the chess programs of today (otherwise some hours of yace could be translated to some minutes of the chess programs of today) >;the question of the Camparison of a top commercial program like Fritz6 and >Deep blue comes down to this question:In a series of games will positions >that require chess knowledge for the selection of the best move occur more >often then positions requireing computational power? From the 2 matches with >Kasparov we can safely deduce that Deep Blue did not have much chess knowledge >in Camparison with Todays programs.Now let us see an example for Computational >Power.In the same game(game5 first match) at move 32 Deep Blue plays 32.f3 >Fritz6 (450Mhz) even after ruuning for 20 minuetes plays 32.gxf4 which is worse >than f3 because it leads to a faster loss. I remmeber that Genius3 on p100 could see f3 in a few hours. I believe that finding f3 may be dpendent in the evaluation function of the program and I expect part of the top programs on good hardware to find it in few minutes. Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.