Author: Sune Fischer
Date: 12:59:26 02/21/05
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On February 21, 2005 at 11:20:17, Dan Honeycutt wrote: >On February 21, 2005 at 02:32:08, Sune Fischer wrote: > >>On February 21, 2005 at 00:41:37, Dan Honeycutt wrote: >>> >>>I understood 1 vs 4 but not necessarily a repeating a losing line where, like >>>you say, the difference can be anything you want. More like engine X plays in a >>>tournament with book 4 and achieves a rating of 2700 - has chances to win. If >>>it enters the same tournament with book 1 it will achieve a rating of ~ 2000 - >>>no chance to win. >> >>Sure, but you don't have to be 700 Elo weaker to have practicly zero chance. >> >>Even if you are just 100 Elo weaker than the top guys you have extremely slim >>chances of winning a long tournament. >> >I don't disagree. But Vincent's statement was the chances of the engine without >book was "zero", not "slim". I doubt Vincent would ever use the word "slim", he'd always call it zero :) As you point out according to Vincent the 700 Elo means _zero_ chance to win. This must be logically equivalent to saying the opponent has a _guaranteed_ win out of book, this can only happen if the opponent can resolve to a mate. Even without book all you need is a bit of learning or you can just randomize the opening moves a bit, then I see no way to get a 700 Elo advantage. >>From that POV getting the best book possible is of course important, still how >>does this prove book 4 is worth 700 Elo? >> >I've seen no proof that book 4 is worth 700 points - in fact I strongly doubt >it. My comment at the start of the thread was that the test by Tord did not >disprove the statement. It can never be disproven, because if you fail it will be because the book "just wasn't good enough". The experiment is a waste of time as it can't be proven to be true either if it is false, which it probably is. -S. >Dan H.
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