Author: blass uri
Date: 22:03:00 04/04/00
Go up one level in this thread
On April 04, 2000 at 17:32:39, Bertil Eklund wrote: >On April 04, 2000 at 15:34:59, Jeremiah Penery wrote: > >>On April 04, 2000 at 15:15:27, Bertil Eklund wrote: >> >>>On April 04, 2000 at 05:18:53, blass uri wrote: >>> >>>>On April 04, 2000 at 03:36:48, Bertil Eklund wrote: >>>> >>>>>On April 04, 2000 at 02:37:26, blass uri wrote: >>>>> >>>>>>On April 04, 2000 at 02:17:14, Bertil Eklund wrote: >>>>>> >>>>>> >>>>>>>> >>>>>>>>You see the result: worthless. >>>>>>>> >>>>>>>>Suggestions: >>>>>>>>1) only use all 3-man and 4-man TBs and leave the few 5-man from the >>>>>>>>EG-Turbo-CDs out. >>>>>>>>2) get/buy/generate the 5-man with queen(s) because of pawn promotion >>>>>>>>3) get/buy/generate ALL 5-man so you get REAL and MAXIMUM performance. >>>>>>>> >>>>>>>>The EG-Turbo-CDs aren't worth a penny. "...contain the most important >>>>>>>>endgames..." is marketing rubbish as you can see yourself with such games. >>>>>>> >>>>>>>Hi! >>>>>>> >>>>>>>Totally nonsense, I have followed houndreds of games with the Turbo-CDs and >>>>>>>usually it works excellent. The CDs contain almost all important endings and if >>>>>>>you want to earn say a ½ elo or support Seagate or IBM you can fill them with >>>>>>>the other mostly obscure endgames. >>>>>>> >>>>>>>Bertil >>>>>> >>>>>>I think that the main reason that it work excellent is that the opponent usually >>>>>>resigns before going to endgame like KRQ vs KR >>>>>> >>>>>>Uri >>>>> >>>>>Hi! >>>>> >>>>>I haven't checked the above game but I haven't seen a program that can not win >>>>>with queen and rook against rook. >>>>> >>>>>Bertil >>>> >>>>The problem is that Fritz does not go to this endgame because this endgame is >>>>not in the tablebases and it prefers a to do a draw by avoiding this endgame. >>>> >>>>Fritz does not know to stop using the tablebases when they tell it that the >>>>distance to mate does not decrease and because of this reason it needs the >>>>KRQ vs KR tablebases. >>>> >>>>If you do not give it this tablebases then programs that never resign can get >>>>better result and I do not like it. >>>> >>>>I do not think that customers are interested more in a program only because they >>>>never resign. >>>> >>>>Uri >>>Hi! >>> >>>I have checked the game now and the draw has nothing to do with missing >>>tablebases, Fritz6 draw the game because some error in the tablebase handling, >>>as you can see the number of moves to mate goes up and down. >>>I checked the position with Shredder4 (with exactly the same TBs from >>>Chessbase), and S4 wins without any problems. >> >>The mate numbers go up and down because when Fritz could promote the pawn into a >>won KRQKR ending it didn't, because it did not have the appropriate TB. >>Instead, it preferred to stay in the TB, even though the distance to mate was >>not decreasing. What it was doing was finding the shortest mate it could find >>(in the TBs it had), and sometimes this was a longer one than on the previous >>move. >Hi! > >I have checked this with Junior6 and it wins easily, in example move 95 Junior6 >plays Rc7 with aforced win. Same tablebases. > >Bertil I suspect that only fritz needs the KRQ vs KR tablebases and not Junior. I generated the KRQ vs KR tablebases and my Fritz6light has no problem to play different moves and I guess that Fritz6a has also no problem to win if you give it also the KQR vs KR tablebases. 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.