Author: Uri Blass
Date: 03:56:11 06/22/02
Go up one level in this thread
On June 21, 2002 at 12:28:49, Christophe Theron wrote: >On June 21, 2002 at 06:53:41, Uri Blass wrote: > >>On June 21, 2002 at 04:57:44, Russell Reagan wrote: >> >>>On June 21, 2002 at 04:38:04, Uri Blass wrote: >>> >>>>How much time does your program need to see that it is a draw? >>> >>>At least a few more weeks :) >>> >>>Russell >> >>It is an easy draw for the following reasons; >> >> >>1)White need always to move the knight by Nb3 N.. Nb3 N.. Nb3 N.. when the >>knight is never captured(the knight is never captured in b3 and we need to prove >>that the knight has a safe black square to go in order to prove that it is a >>draw). >> >>2)The black king cannot control a1 so the black bishop needs to be in the long >>diagnol in order to prevent a1 from the knight. >> >>3)The black bishop in the long diagnol can not control a5 so the black king >>needs to control that square. >> >>4)3 means that the black king cannot control c1 and d2 so the black bishop needs >>to control these squares but the black bishop must be in b2 in order to control >>both a1 and c1 and it does not control d2 from that square. >> >>I believe that even programmers with rating of 1500 can find that it is a draw >>and I wonder if one of them was smart enough to write the relevant code to >>explain it to the computer. >> >>Uri > > > >The question is: will it make the program stronger? > >I can easily see how it can make a program weaker by slowing it down, and I >seriously doubt it will increase the program's rating by a single elo point. I can see how it can make the program better. If you have a function that calculates it only at the first plies and continue to claculate it only if it finds that the knowledge is relevant then the program may be only 0.1% slower in most of the positions when it may see the draw and avoid a mistake in some cases. You can still say that there are things that are more important to do but I believe that every knowledge can do programs stronger. Uri
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