Author: blass uri
Date: 07:37:47 12/24/98
Go up one level in this thread
On December 24, 1998 at 09:12:05, Ralph E. Carter wrote:
>>>Posted by James T. Walker on December 22, 1998 at 19:47:21:
>>>
>>>Bob I hope you see this and can explain. This is the Crafty 15.20 inside of
>>>Nimzo 99 and inside Junior appears to work the same way. Notice the times it
>>>takes for Crafty to move. When this is run under Winboard Crafty plays the
>>>entire variation in only a few seconds. Notice Crafty takes 72 seconds to make
>>>the Mate in 1 move. Crafty searches 10 ply for that move but notice that is
>>>typical of all the moves. It's a mate in 7 I created several years ago (18) to
>>>test some of the old dedicated chess computers.
>>>
>>>Event "?"]
>>>[Site "?"]
>>>[Date "????.??.??"]
>>>[Round "?"]
>>>[White "Crafty 15.20"]
>>>[Black "?"]
>>>[Result "*"]
>>>[Annotator "Crafty 15.20"]
>>>[SetUp "1"]
>>>[FEN "1k6/1P3p2/K7/8/8/8/7P/8 w - - 0 1"]
>>>[PlyCount "13"]
>>>
>>>{59392kB, nzbook.CTG. PentiumII
>>>} 1. Kb6 {#7/12 46} 1... f5 {11} 2. h4 {#6/14 31} 2... f4 {1}
>>>3. h5{#5/12 40} 3... f3 {1} 4. h6 {#4/11 39} 4... f2 {1}
>>>5. h7 {#3/11 38} 5... f1=Q {27} 6. h8=Q+ {#2/10 11} 6... Qf8 {3} 7. Qxf8# {#1/10
>>>72} *
I tried this position with crafty15.18 as an engine for Junior5 in the analysis
option and it found it in less then 1 second the mate in 7
I think that the times are not right and they are only time of performing the
move and not times of doing the moves.
Crafty15.18 feels a duty to continue to search even after it finds a mate in 1.
Crafty can play the moves fast if you give it a short time control and play the
moves slow if you give it long time control.
I think that this has nothing to do with clearing the hash tables because even
in a new position every program has no problem in finding mate in 1 in 0 seconds
Uri
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.