Author: Uri Blass
Date: 13:20:13 08/26/00
Go up one level in this thread
On August 26, 2000 at 15:28:59, Enrique Irazoqui wrote: >On August 26, 2000 at 14:52:22, Sandro Necchi wrote: > >>On August 26, 2000 at 08:53:45, Enrique Irazoqui wrote: >> >>>Shredder won the WMCCC, and even if there is an important luck factor in any 9 >>>rounds event, the fact that it won for the second consecutive time, together >>>with the quality of its games, makes quite clear that sheer luck was not the >>>reason for Shredder's success. In my opinion, Shredder is the strongest in the >>>endgame and, together with Junior, has probably the best evaluation functions of >>>all programs. On the other hand, it lacks the search speed of Fritz, Tiger, >>>Nimzo and The King. Overall, I think that Shredder is clearly one of the very >>>best chess engines. >> >>Yes, you are correct. >>> >>>In London, Fritz and Shredder have been the only undefeated programs, and the >>>only ones, together with Nimzo, that played the strongest possible opponents. >>>Shredder and Fritz have also been the only programs that from the first until >>>the last day of the tournament were on top. Claiming any sort of superiority of >>>one over the other based on half a point difference is, in my opinion, unfair to >>>Fritz and the greatest nonsense I read here in CCC. >>> >>>My guess about the final outcome was Fritz, Junior and Shredder, although I >>>wasn't sure at all about the order. >>> >>>Shortly before London, I played these games with Shredder 4.22 on 2 P600E >>>machines with 256MB RAM and the same WMCCC time controls. S4.22 beat neatly the >>>other 2 betas I made it play against, by 6-0 in one of the matches. The overall >>>results were great, and the final Shredder 5 will be even better, I'm sure of >>>it. Enjoy. >> >>Yes, but you did not have our new opening book which we use at the tournament. >>Unfortunately 9 games are not enough to show all the potential, but the new >>commercial version will. >>I am the opening book maker. I know you know me. > >Hi Sandro, > >Of course I know you! I didn't know you had anything to do with Shredder. This >is a guarantee that Shredder will have a great opening book, and certainly >better than the one I used. I was not impressed by shredder's opening book in WMCCC. Shredder falled in a trap against Nimzo and it seemed that it did not get a good position out of book against Rebel but I do not know in the case of the game against Rebel when the sides left book so it is possible that the mistake of shredder was in the middle game. My impression based on WMCCC was that the strong parts of shredder were the endgame and tactics when it knew to avoid Qxb4 in the following position: [D]r3rb1k/6p1/p2p3p/1ppb4/PB6/5NRP/1q3PP1/1B1QR1K1 b - - 0 1 Shredder knew to avoid Qcb4 and played Bc4 when other programs like chessmaster6000 or hiarcs7.32 and also Fritz6 (based on James walker's post) fall in the trap Qxb4. The only program that I found that can avoid Qxb4 is Junior5.9 so I guess that Junior6a can also avoid the trap. I do not have tiger or Nimzo or Rebel century2 and I did not check RebelCentury1.2 Uri
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