Author: Vincent Diepeveen
Date: 14:21:58 01/04/01
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On January 04, 2001 at 09:28:06, Uri Blass wrote: >On January 04, 2001 at 09:02:57, Jeroen Noomen wrote: > >>On January 04, 2001 at 07:38:15, Wybe Koopmans wrote: >> >>Moves up to move 14: >> >>white: Rebel >>black: Van der Wiel >> >>1. e4 c6 2. d4 d5 3. Nc3 a6 4. Be2 b5 5. a3 e6 6. Nf3 Nf6 7. e5 Nfd7 8. Bg5 Be7 >>9. Bxe7 Qxe7 10. b4 a5 11. Na2 axb4 12. axb4 0-0 13. Bd3 f6 14. exf6 gxf6 >> >> >>Well, nice trick this 3 ... a6!? move in the Caro-Kann. Just as I had something >>on my sleeve against his 1. ... g6 pet line.... Too bad, maybe next time!? >> >>Jeroen > >I looked at the chessbase online database and found 13 games with the position >after 1.e4 c6 2.d4 d5 3.Nc3 a6 so Van der Wiel's move is not a novelty. > >How many positions do you need to include in Rebel's book in order to prevent >the opponent to get Rebel out of book without making a novelty. > >Rebel does not have to know all the positions in the games becausethe user book >prevent most of the position(if the user book has only 1.e4 or 1.d4 then games >with 1.c4 for the opponent are not relevant. > >I think that it may be productive if Ed writes a program to find all the >possible positions that can happen when Rebel is out of book not because of a >novelty. > >He may give these positions to you in order to help you to get a better opening >book. > >I guess that the number of the relevant positions is between 10,000 and 100,000 >and the number of relevant position when the position was played at least 13 >times is clearly smaller. > >Uri Hello where did we learn math? If the above you say is true then grandmasters like Kramnik, Kasparov and many others will never again be able to play novelties but will get killed against the database of 10^40 positions from the rebel book. Greetings, Vincent
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