Author: blass uri
Date: 22:39:13 03/26/00
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On March 26, 2000 at 18:03:33, Djordje Vidanovic wrote: >Hello Chessfun, > >Exactly. The first position (21.e4!!) is _very_ difficult. We always tend to >insist on programs being very good tacticians and the position in this case is >based on a positional sac. Thus the sac is tactical, but the grounds for it are >positional. The combination of the two is why 21.e4!! is one hell of a move to >find. I believe that many humans would be able to find it, but very few >computer programs. You are about right, I believe, that at least ten minutes of >pondering are needed. Would be interesting to test a program on a quad box - >Deep Junior or Crafty, perhaps? Or Ernst's Dark Thought? > >*** Djordje I think that Deep Junior is not the right program for this position because it probably needs a long time even only to find Nxe4 with a negative score(I have not Deep Junior but only Junior5.9 but I assume that these programs are similiar). Junior has problems to find sacrifices of a piece for pawns because of the fact that the value of the pawn of Junior is reduced(it cannot find Junior's famous and good sacrifice against nimzo for the same reason). I will not be surprised if people find that Junior5 is faster than Deep Junior in finding Nxe4. one of Fritz5 versions could find Nxe4 in 1 second on p200MMX but see a negative score in the first minutes and expect fxe4 so I think it will also have problems to find e4. Uri
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