Author: Uri Blass
Date: 01:29:46 12/17/05
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On December 17, 2005 at 04:14:32, Joseph Ciarrochi wrote: >Test is on a pentium 4 with a sample of 22 gambits across the eco codes (engine >forced to play both sides). Time was 25 minutes with 1 sec increment > >Fritz 9 had 14 wins, 18 loses, 12 draws > >This may be a notable drop in performance for fritz 9. For example, the CEGT >blitz (40 4), using more standard test sets, has fritz 9 well in front of gambit >fruit both head to head (15 wins 8 loses 7 draws) and in terms of rating (fritz >9 has 100 points on gambit fruit). There are differences between these >tournments, other than the test set, but I think these findings do suggest that >maybe fritz 9 loses a little strength against gambits? Is it possible that >fritz 9 was tuned on the nunn test sets? > >In defense of fritz 9 (and much more data is needed anyway to make firm >conclusions), it is the only engine that is keeping pace with rybka in a gambit >tournment (same test set, 25 1 time, pentium 3 processor). Here are the interim >results at about the the half way point (except for gambit fruit which is >finished) > >Rybka versus > > win loss draw >gambit fruit 1 4bx 20 11 13 >fruit 2.2.1 10 3 8 >fritz 9 8 10 3 >toga II 1.1 10 6 5 >spike 1. 0 mainz 14 0 7 (still no losses! wow) >ruffian 2.1 13 2 5 > > >In general, it looks like fritz 9 holds its own against rybka in head to head >contests, but is not as good against fruit and some other engines (see >http://www.husvankempen.de/nunn/eloblitz.html#3). Indeed, rybka seems to be >killing fruit . > > >Any thoughts or implications? Rybka is suppose to be heavily strategic, but it >really is fantastic at Blitz and gambits. > >best joseph > >ps. If anybody wants to do the gambit test on hiarcs ten, or on whatever engine, >i'd be happy to post the test set (I am going to expand it by 8 gambits)...The >games are absolutely fascinating. > > >best >Joseph Does the side that sacrifice in the gambit get near 50% less than it or more than it? Note that if it get near 50% without too many draws then I think that it is better if the CEGT also include the gambit in their tournament because a score that is near 50% means that the position is balanced. Uri
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