Author: P. Massie
Date: 17:38:16 05/14/02
Go up one level in this thread
Since I have a copy of Hiarcs8, I decided to review the opening book a bit.
There is definitely a problem of some sort in the book. The entries in the book
look quite reasonable, as do the results. The problem lies with the "N" column,
which represents the number of games played with that move. This number
sometimes looks quite reasonable, and at other times is clearly quite wrong.
In the following case, the book follows approximately 4,000 entries to the Black
response to move 12. 12 ... Rd8 gets the majority of those, but once you go
down another level after 12 ... hg5 you find the number is again back up to
4,000 for that branch alone. And that is obviously wrong. I went through Mega
2002 + MegaCorr and could only find four cases where this move (12 ... hg5) had
been played, so clearly the "N" column in the Hiarcs book is wrong. And since
that provides a weighting factor, the moves played frequently become moves that
should never be played.
Paul
On May 14, 2002 at 20:11:43, P. Massie wrote:
>12 ... hg5 is a known bad line. The better move is 12 ... Rd8. Taking the
>bishop here leads to a vicious attack. If this is in the book then it's clearly
>not a book intended for competitive play. It may make for interesting games
>with humans, but it'll lose a lot against strong computers or humans.
>
>Paul
>
>
>On May 14, 2002 at 20:03:56, James T. Walker wrote:
>
>>Because of the quick win by Fritz I suspect there is something wrong with this
>>opening.
>>
>>[Event "Blitz:5'/Athlon 1.4G/512M"]
>>[Site "MyTown"]
>>[Date "2002.05.14"]
>>[Round "4"]
>>[White "Fritz 7"]
>>[Black "Hiarcs 8"]
>>[Result "1-0"]
>>[ECO "B65"]
>>[PlyCount "47"]
>>[EventDate "2002.05.14"]
>>
>>{64MB, Hiarcs8.ctg, Athlon 1.4G/512M
>>} 1. e4 {0} 1... c5 {0} 2. Nf3 {0} 2... d6
>>{0} 3. d4 {(b3) 0} 3... cxd4 {0} 4. Nxd4 {0} 4... Nf6 {0} 5. Nc3 {0} 5... Nc6 {
>>0} 6. Bg5 {(Bc4) 0} 6... e6 {0} 7. Qd2 {0} 7... Be7 {0} 8. O-O-O {0} 8... O-O {
>>0} 9. f4 {0} 9... Nxd4 {0} 10. Qxd4 {0} 10... Qa5 {0} 11. Kb1 {(Bc4) 0} 11...
>>h6 {0} 12. h4 {0} 12... hxg5 {0} 13. hxg5 {0} 13... Ng4 {0} 14. Be2 {(Rh4) 0}
>>14... e5 {-0.62/9 20} 15. Nd5 {(Qd3) 0} 15... Bd8 {0.39/10 82} 16. Qd3 {0}
>>16... Nf2 {0.39/10 8} 17. Qg3 {0} 17... exf4 {4.45/9 62} 18. Qxf2 {(Qh4) 3}
>>18... Bxg5 {1.81/8 3} 19. g3 {(Rh5) 1} 19... f5 {3.74/8 23} 20. gxf4 {0} 20...
>>fxe4 {5.64/9 30} 21. Bc4 {(Qg2) 0} 21... Be6 {6.51/9 22} 22. Qg2 {0} 22... Rf5
>>{7.94/8 9} 23. Qxe4 {2} 23... Re8 {16.37/8 11} 24. fxg5 {Resigns 3} 1-0
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