Author: Robert Hyatt
Date: 19:04:51 02/22/06
Go up one level in this thread
On February 22, 2006 at 19:33:08, Mike Byrne wrote: >Today I ran this little tournemant -- hoping it would help me decide which >version of Crafty to run in CCT 8 > >Standard Crafty 20.3 or Crafty 20.3 SE > >Crafty 20.3 SE essentaily has a modified search extension limiter (found in >chess.h) and a 3 way null mover instead of the standard 2.(R may equal 2, 3 or 4 >- dependng on search depth and pieces on the board.) > >I was hopping for a decisive result - playing a 3 way match between Standard >Crafty 20.3, Crafty 20.3 SE and Glaurung-AMD64 (very nice program Tord!) > > Engine Score Gl Cr Cr S-B >1: Glaurung-AMD64 14.5/28 ·············· ==00111=1==101 ==00=01100=1== 200.00 >2: Crafty 20.3b 14.0/28 ==11000=0==010 ·············· ==1=00=11=1==1 194.50 >3: Crafty 20.3b ORI 13.5/28 ==11=10011=0== ==0=11=00=0==0 ·············· 193.00 > >For blitz, this is very good Crafty result, Glarung is ranked right between Cm9K >amd Cm10K default and between Ruffian 2.1 and Ruffian 2.02 and this higher than >any Crafty currently on the CEFT blitz list. > >The dilemma a of course is that A beats B, B beats C and C beats A -- which >Crafty do you go with for CCT 8 - B or C? It is actually even more complicated. I found a bug in the forward pruning and fixed it today. I am also currently running some tests to vary the extension amounts all over the place to find the strongest/fastest combination. You can play what you want of course, since you volunteered. :) I should have some fairly definitive data by tomorrow on the extension tuning issues, and will play a bunch of NUNN-type matches against 19.20 to compare...
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