Computer Chess Club Archives


Search

Terms

Messages

Subject: Results of analysis of 2 positions posted about a week ago

Author: Les Fernandez

Date: 10:01:13 01/14/05


Following is a table that summarizes some of the analyses of 2 positions that I
had posted here about a week ago.  Most of the people who were kind of enough to
analyze these 2 positions had also told me that they did in fact clear cache
before running them.  Can someone offer an explanation why the analysis times
are so different from Position #1 to Position #2??  Following are the 2
positions I posted about a week ago.

Position #1

[D]1b3rk1/pp4pp/2p3n1/1P1p4/P2P2q1/R4NPb/3NBK2/3QR3 b - -


Position #2

[D]1b3rk1/pp4pp/2p3n1/1Pqp4/P2P4/R4NPb/3NBK2/3QR3 b - -

Following are the results of various engines analyses:

Engine            Position #1 (sec)   Position #2 (sec)

xinix                 24.0                  9.0
zappa                  2.5                  1.2
snitch                 6.0                 11.0
trace                  8.3                  6.8
fruit 2.0              5.0                  3.0
glaurung 1.5          11.0                  6.0
gothmog b12           12.0                  2.0
macChess 5.01         10.0                  6.0
ruffian 2.1.0         11.0                  4.0
sigma 6.1             34.0                  8.0
movei (old)          180.0                 60.0
movei (latest)       300.0                 20.0

It would have been interesting to here from Shredder, Junior, Crafty, Fritz.
Anyway if I made a mistake with any of the above numbers I apologize.  I thought
it was interesting to see how different 2 positions with such a slight
difference can affect the analysis time.

What are your thoughts??

Thanks,

Les



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.