Author: blass uri
Date: 08:50:43 02/27/00
Go up one level in this thread
On February 27, 2000 at 09:46:22, Mike S. wrote: >On February 27, 2000 at 03:04:05, Tom Kerrigan wrote: > >>I don't think exact adherence to these rules is necessary. > >No? You may want to try this position with your computer: > >Zepler # in 4 - [+1430.04e5e8] >Die Schwalbe, 1929 > >[D]r3k3/2Qp3R/1p6/1b2K3/4p3/8/5p2/8 w q - 0 1 >1.Kd4 (threats 2.Qe5+ and 3.#) [1.Qd6? 0-0-0] 1...Ra4+ 2.Ke5 Ra8 3.Qd6 1-0 > >I was busy with this issue when a wrote a short article for CSS 4/1995. All the >programs I tested then, didn't apply the correct rule (Fritz 3, Rebel 6, W Chess >1, Genius 3 and Hiarcs 3). It was remarkable that the mistake happened in >problem mode also. This is really a problem but most programs are not for solving problems but for playing. > CB's Mate 2.0-engines handles it correctly. >Btw., I'm sure programmers know the rule very well of course, but when it's >disregarded it is been done to gain more search speed I think. I have never >heard of any important, or not even unimportant, game where this would have >mattered. >But if this would happen (incorrect claim of a draw, program refuses to >continue), I think there would be no special tournament rules for this and the >unavoidable anger, dispute and scandal would follow. There are clear rules that if the program does not do a move and claims a draw incorrectly when there is no draw then it loses on time. There will be no scandals but only a loss. I guess the practical chance that it happens in a game is less than 0.00001 and it is more productive to fix other problems. Such things usually arise >in the most important game of a championship. I will be amused... There is no reason that they arise in the most important game. The chances are the same for every game. Uri
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