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Up Topic The Rybka Lounge / Computer Chess / all these new opening books.
- - By NATIONAL12 (Gold) Date 2010-02-12 00:35
whilst great fun at blitz,are a complete waste of time for long time time control games or correspondence chess.

other peoples opinions would be welcome.
Parent - - By Zat (*) Date 2010-02-12 00:57
some of them are junk at longer time controls with a strong CPU, but at 3 0 blitz (barely slow enough to call blitz) they are novelty tricks which find success.
Parent - By NATIONAL12 (Gold) Date 2010-02-12 01:09
i have fairly big hardware 4 and 8 cpu and have found them,to be polite of no use to me.sometimes in a match we are already looking 10-15 moves ahead and then up to depth 29-30 from that position.
Parent - By BrandonSi (***) Date 2010-02-12 01:54
Yes, they're useless for long time controls, but that's a different game. Using a blitz opening book for correspondence chess is like bringing a golf club to a tennis match. They're different games, and require different approaches/equipment.
Parent - By Master Om (Bronze) Date 2010-02-12 08:43
This is what i have been telling since i have left playing sedat tournament. but you can try my Om Long Book 2.0 but i dont have it now. you will not regret of using it.
Parent - - By Nelson Hernandez (Gold) Date 2010-02-12 22:46
The object of opening books is to exit book with some combination of an evaluative and time advantage.  The usefulness or perniciousness of a book is in direct relation to how well it achieves its object. 

Your heavy hardware, for example, can be neutralized or even put on its heels by a book that leaves you with half the time on the clock that your opponent has when he exits book.

The question is to what degree the book is producing moves that are inferior to the opponent who is out of book and using his engine.  You can accept small inaccuracies if the clock is working in your favor, but you can never accept seriously inaccurate moves.  All books no matter how large have the same problem of being unreliable in the last few moves in book unless they are truncated based on some criteria.  This trade-off (less time in book/less danger vs. more time in book/more danger) is a conundrum all bookmakers have.  There is no statistically 'correct' answer.

All I can say is that some books are measurably better than others at achieving their ends.
Parent - - By NATIONAL12 (Gold) Date 2010-02-12 23:19
whilst i agree with most of what you say,i only tend to play in 24/48 hour move games and this is what i was referring to.at these time controls you can usually discount a lot of games played at blitz,i often prefer to look at correspondence games which look deeply into the position.anyway i have stated my position on this before and to me blitz games beyond a certain point are just like playing MonteCarlo.ie the % often look good but with deep IA you can usually find there is a better move that blitz games will never find.
Parent - By Nelson Hernandez (Gold) Date 2010-02-12 23:52
Undeniably correct.  Like the other fellow said, you're talking a different game.
Parent - By Geomusic (*****) Date 2010-02-14 08:26
most of my books end at about move 12
Up Topic The Rybka Lounge / Computer Chess / all these new opening books.

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