Author: Uri Blass
Date: 00:50:35 01/25/01
Go up one level in this thread
On January 25, 2001 at 02:53:50, Uri Blass wrote: >On January 24, 2001 at 17:22:00, Uri Blass wrote: > >>On January 24, 2001 at 16:56:04, Jonathan Lee wrote: >> >>>On January 22, 2001 at 17:21:38, Uri Blass wrote: >>> >>>>On January 22, 2001 at 16:49:17, Jonathan Lee wrote: >>>> >>>>>In the top programs (Junior, Tiger, and Fritz) since Jan. 1st 2000 how many >>>>>games did the human beat the machine with a queen? >>>>>So far all of the games in Frankfurt and Dortmund the human had a queen upon >>>>>getting a win. >>>>>How about the last 2 Dutch Championships? >>>>>What percentage of games did the human win with or without a queen. >>>>>This excludes pawn promotion. >>>>>It seems to me beside closed games, the queen is the next nemesis for the >>>>>machine. >>>>>(Imagine the initial position which is before move one that the squares d1 and >>>>>d8 are vacated. The top programs would most probably jump another 100 rating >>>>>points.) >>>>>Jonathan (90th message) >>>> >>>>I do not think that without queens the top programs can do better. >>>> >>>>It is more easy to win with queens but it is also more easy to lose with queens. >>>>The humans who lost at dortmund had also did not trade queens >>>> >>>>Uri >>>Uri, I disagree with your comment. No queens on the board means extra ply or >>>plies for the computer. Thus, the computer is actually higher rated. >> >>It is more easy to calculate more move forward with less pieces on the board >>It is truth for both humans and computers so I do not see the point. >> >>Uri > >Here is a practical example. > >This position is from the olympiad. > >It is easy for GM's to calculate that Nc3 is winning when chess programs may >have problems with it because they have not enough extensions. > >[D]8/4b3/4p3/1k1n1p1p/1pNPpP1P/pP2P2K/P2B4/8 b - - 0 1 > >Uri I can add that Crafty17.14 can find Nc3 at depth 21 after some minutes but for the wrong reasons. It hates closed position and the score is not symmetric. It does not see that Nc3 is winning and it gives it a score of 0.09 for black. Uri
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