Author: Carlos Lantigua
Date: 20:45:58 11/17/03
Go up one level in this thread
On November 17, 2003 at 21:17:37, Kevin Heider wrote: >After watching Fritz not play either f5 or h5 in game 3, I have to say that >Deeper Blue (DB2) was the best chess computer EVER. Even with a better >evaluation algorithm; Fritz at 4m nods/sec can NOT be as strong as DB2 at 200m >nods/sec. > >DB2 simply knew when it had to start mixing it up. > >I took the position from Move 37 of Game #2 of Deeper Blue vs Kasparov. This is >the position where Gary claimed that someone (Karpov?) was feeding DB some of >it's moves. Gary could not believe it when DB played Be4! blocking the black >e-pawn from advancing. > >I had Rebel XP start an infinite search on my DURON 1100MHZ and it took almost >20 hours to find 37 Be4! (The move Gary claims a computer would never come up >with) > >Granted different programs do different searches/evaluations, but if Be4 is as >positionally strong as Gary claims then a lot of programs should like it after a >very deep search. > >If I assume: > >1. Rebel / Fritz / Junior / Shredder are of roughly equal strength > >2. DB took 10 minutes to find Be4 > >then I can conclude that X3D Fritz needs a better function or needs to run >(20hr*60m/10m) 120x faster to play at DB2 strength. > >Since I only own Rebel: Has anyone recently checked this famous position to see >if Fritz, Junior, or Shredder like the position after a deep think? > >Rebel XP's lines: >01:58:56 19.00 Qb6 Rxa2 Rxa2 >08:14:57 20.00 Qb6 Rxa2 >19:26:24 20.05 Be4 Rcb8 >32:42:43 21.00 Be4 Rcb8 Ra6 Qc8 Qa2 > >You will also notice on the right side of my screen grab that Rebel's 4th >favorite variation shows that if 37. Ra6 e4! Qe3 > >You can see a screen grab of the analysis at: >http://home.comcast.net/~kpheider/DB2BE4.GIF > >-- Kevin Heider GK-DB 97. That is what i call the last real and serious man vs machine match.
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