Author: Robert Hyatt
Date: 13:45:50 04/24/00
Go up one level in this thread
On April 24, 2000 at 16:37:40, blass uri wrote: >On April 24, 2000 at 16:06:55, Robert Hyatt wrote: > >>On April 24, 2000 at 15:01:22, Christophe Theron wrote: >> >>>On April 24, 2000 at 14:42:36, A.L.Mourik wrote: >>> >>>>Hello to everyone, >>>> >>>>Two days ago I played a Nunn 2 match between Fritz 6 and Crafty 17.10. >>>>This whether to check if Crafty as supposed by e.g Jouni Uski was really as good >>>>as been told . >>>> >>>>The result in a Nunn 2 match that I held was disappointing because it ended in a >>>>clear 29,5 - 10,5 victory for Fritz6. >>>>Timelevel 5min +3 sec. PII 400 each 8 MB HT, pondering off. >>>>The only reason that I played a Nunn 2 Match between these two engines, was to >>>>TEST which program under equal circumstances, as in this case in the Fritz6 gui, >>>>scored the best. This as an indication of the ?chesspower? of that engine. >>>>Imho these are the best circumstances with one computer to tell which program >>>>produces the best chess. >>>> >>>>You can?t argue on the fact that the circumstances for the given engines were >>>>not the same. >>>>As far as I can see it, your only real point is the presumption, that Crafty >>>>does a better time saving in the pondering on mode, than Fritz6. >>>>So I agree that with testing on two different computers and with both programs >>>>pondering on, this presumed negative effect for Crafty would be neutralised. >>>>On the other hand I wonder what Morsch or other respectable programmers opinion >>>>on these presumption is. >>> >>> >>> >>>I'm not sure I am a respectable chess programmer, but I want to ask something: >>> >>>Why is Crafty's management of pondering supposed to be superior to Fritz'? >>> >>>Why is pondering=off supposed to handicap Crafty more than Fritz? >>> >>>Who can seriously believe that Frans Morsch is so lousy that he cannot take >>>advantage of pondering as well as Bob does? >>> >>> >>> Christophe >>> >>Your question is _bass-ackward_ in it's phrasing. It should be "who would not >>believe that Frans has spent more time testing with ponder=off than bob has, >>so that it isn't a surprise that fritz probably does a better job of allocating >>time in that mode than crafty does?" >> >>_that_ is the point. Not that I am better with ponder=on. That I am _worse_ >>with ponder = off. How hard is that to understand??? > >I do not think that you are worse with ponder=off. >I do not think that Frans wasted a lot of time about ponder=off games. > >The important games for him including ssdf games are with ponder=on > >Uri I have seen some results from ponder=off. Which usually include time problems in the endgame. Because in the opening and middlegame I allocate more time for the search than is really reasonable, since I know I will pick up some time here and there on correct ponder searches. I have been sent multiple games played with ponder=off where it played fine thru the opening, and middlegame, but got blasted in the endgame because of severe time pressure. In a normal game, of any time control, whether fischer or normal, it simply doesn't have any time problems. With ponder=off, it definitely does. When I saw that one batch of games, I made a small change to the time allocation, but I didn't test it at all as I am simply not interested in that mode of operation for anything other than debugging, so that I can play several moves in a row and reproduce the same node counts every time...
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