Author: Randolph S. Baker
Date: 13:35:44 10/28/97
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On October 28, 1997 at 15:55:16, Chris Whittington wrote: (stuff pruned) >>> >>>Also Franz Morsch is not happy with his opening today - it was some of >>>repetition with a knight on c6-a5 repeating. Apparently the program came >>>with a little minus out of book, so Fritz repeated, this despite wanting >>>and expecting to win against Anmon. Big opening books don't always help. >>> >>> >>>>Chris Whittington >> >> >>What is happening with Fritz anyway!? Four draws and a loss, while >>everybody >>expected Fritz to be a contender for first place..... Does Thorsten >>have more >>information about this? > >I'll try and find out tomorrow morning. Or else Ingo (who has kindly >volunteered to take on my role as of tomorrow) can get the phone passed >direct to Frans and ask him straight ... > >Chris > > > >> >>Large books are very bad in tournaments like this, IMO. The variation >>you mention >>could be a Two Knight's Defence, in which White plays Qb3, Black ... Na5 >>and then >>Qa4+, Nc6 Qb3, Na5 and so on, with a repetition of moves. I am curious >>to see >>this game. >> How do other programs (e.g. Crafty) have opening books generated for them? I don't know if Fritz5 is using the new Powerbooks at WMCCC, but the new Powerbooks are essentially automatically generated from a large set of high-quality games as opposed to being specifically tuned for a machine. (Although Fritz5 can adjust the weights for various opening lines based on its win/loss experience). It strikes me that what works for world-class players need not necessarily work for computers. If I understand the Fritz tree, however, Fritz only plays lines which resulted in a significant number of wins and were played in a statistically significant (whatever that means 8) number of games. This would seem to be a sensible approach. Ramdy >>Jeroen Noomen
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