Author: Joseph Ciarrochi
Date: 01:14:32 12/17/05
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
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