Author: Jason Williamson
Date: 01:57:21 05/09/00
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On May 09, 2000 at 02:06:01, Mark Longridge wrote: >> >>It sounds like your book was made from a small set of games, with a lot of >>1. f4 games in it to make that appear the most popular. What did you build >>it from? > >Used the medium book from your ftp site, added all Fischer's games, >all Deep Blue, Kasparov's games, and yes a ton of Bird's Opening >games with 1. f4 > >Never thought that the number of games could decide the frequency >of a particular opening, which does make sense to me. My book is >over 33 megs, so I don't think it's a small book. I wanted something >out of the ordinary to mix things up, hence the 1. f4 games. And >indeed, after a ton of bird's opening games, some computers are >ill prepared to fight against it. It has more difficulty against >Nimzo2000 and Gandalf using this opening. > >I also tried experimenting with 1. d3 and 1. a3 with very mixed results. >My conclusion with these oddball openings is that they can win, but >1. a3 seems only barely playable. Compared to really weird openings, >the bird's opening wins just over 50% of it's games. Usually it's set >to play 4 15 and 15 1 time controls, and I'd even go as far to say that >Crafty plays 4 15 better than quicker time controls, especially against >engines like Fritz and Hiarcs. For example, 4 15 seems to go much better >than 5 3. > >But I don't understand the number of Philidor's Defense games, which is >rather drawish (but still a lot better than 1. a3) Don't knock Crafty playintg the Birds...on the ICC Counterplay when it was running Crafty awhile back had a 100% record with it and performance rating of 3200! :)
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