Author: Wayne Lowrance
Date: 22:32:04 03/17/00
Go up one level in this thread
On March 18, 2000 at 00:30:30, Christophe Theron wrote: >On March 17, 2000 at 16:23:30, Wayne Lowrance wrote: > >>On March 17, 2000 at 13:33:29, Christophe Theron wrote: >> >>>On March 17, 2000 at 08:14:38, Wayne Lowrance wrote: >>> >>>>On March 16, 2000 at 16:40:47, Christophe Theron wrote: >>>> >>>>>On March 16, 2000 at 10:45:54, marcelo alvarez wrote: >>>>> >>>>>>Yesterday, I have purchased Chess Tiger engine and CP 4.3. I want to know the >>>>>>strongest settings for this engine at short time controls (for example G/5) and >>>>>>rapid chess (for example G/15 and G/30)versus others programs using auto232. >>>>>>Thanks. Marcelo Alvarez. >>>>> >>>>> >>>>>What is the speed of your computer? Everything depends on it... >>>>> >>>>>If you have a fast computer (200MHz or more), I would simply suggest at short >>>>>time controls (G/5 or faster): >>>>>1) do NOT give it too much hash tables. 4 Mb will be enough. If you give more >>>>>than that, the time spent in clearing or updating the hash tables at each move >>>>>will weaken the program >>>>>2) close all unnecessary windows (for example the book window) and toolbars. >>>>>3) do not move the mouse when the program is thinking. On some computers, this >>>>>slows down the program tremendously. >>>>> >>>>>You can give the program more hash tables when you play at G/15 or slower. >>>>> >>>>>Then go to the Rebel Home Page (www.rebel.nl) and look for the new, more >>>>>effective, engine settings (NSEW=1 and MoreSel=1). >>>>> >>>>>Also it seems that changing the "contempt factor" can help Tiger a little bit. >>>>>In the engine properties page, set the "score for a draw" to the value "-10" >>>>>(that means a tenth of a pawn). >>>>> >>>>>Last thing: make sure that the "analysis brain" is OFF when you play a game. >>>>> >>>>> >>>>> >>>>> Christophe >>>> >>>>One last input from you Christophe. If entries were entered by hand with game in >>>>5 and game in 10 (no increments) what time control setting would you use for >>>>those two examples. 400 mhz pent.? Thank you. >>> >>> >>>My own experience with manual entry is limited to the text mode version of Chess >>>Tiger, that I have operated for years against various opponents (mainly humans >>>at my chess club). >>> >>>If I am in good shape, I can enter (type) all the moves of a game in 4 minutes >>>(assuming a rather long game, you never know). But this takes into account >>>physically moving the piece on the board and tapping the clock too. >>> >>>You'll be using the mouse, and will not have to think about moving the pieces or >>>tapping the clock, so I guess you can enter all the moves in 2 minutes? >>> >>>So for game in 5, set it to game in 7. For game in 10, of course it means game >>>in 10. But you have to be fast! >>> >>> >>> >>> Christophe >> >>Christophe Thank you. But I don't understand. If I set tiger to game in 7 on a >>5/0 time control game, Tiger is gonna take too long and loose on time, everytime >>I think. Can you explain ? > > >OK, apparently I did not understand the question. So it is the opposite of what >I have described. Set it to game in 3 if you are manually operating a game in 5. > > > >>I can work out the time allotment. I think if you can reassure me that Tiger >>plays at full strength in any of the allowed time control committments That >>would be fine. that probobly was a better question to start with. :) > > >This time I'd better simply admit that I don't understand your question. > >If you are asking if Tiger plays "at full strength" in short time controls, I >would answer: yes. Tiger is not optimized for a particular time control. You can >use it at any time control. Well, maybe it's not really true for time controls >under 1 minute per game, because the graphical interface is maybe going to eat >too much processor time, but for time controls longer than 1mn/game, go ahead, >it's OK. > >In short: I accept the challenge against any chess program at any time control >(provided equal hardware and equal time controls are given to both). > > > >> I only ask >>cause it seems, and I cannot prove it or describe the conditions as yet but >>Tiger has given me cause for concern when honking around in the infinate time >>control period after having set up a pre arranged position. What i have seen is >>that on move _n_ Tiger has rated the game as _v_ value points. and after the >>move the value of _v_ has on occasion been rather different, always on the worse >>side. > > >Maybe after you make the move it can see a deeper combination and realize it is >not as good as it thought before. But this is a normal behaviour of any chess >program, just forget about it... > >No the value changed immediately. I know about search depth and changes in eval. I dont want to leave the impression to the reading forum that I have discovered a bug, I have not, that I can verify ! > > Christophe Thanks, you have answered my question about playing strength. no further thread required.
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