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Subject: Re: BUG in FRITZ 8.0023 !

Author: Drexel,Michael

Date: 22:28:43 03/06/03

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On March 06, 2003 at 22:58:42, Eduard Nemeth wrote:

>First moves are: 1.e4 Nf6 2.Bc4 c6 3.a3
>
>[D]rnbqkb1r/pp1ppppp/2p2n2/8/2B1P3/P7/1PPP1PPP/RNBQK1NR b KQkq - 0 1
>
>Fritz 8.0023 played now nit Nxe4. :(
>
>Fritz 8.005 does it! :)
>
>My full german message read here:
>
>http://f50.parsimony.net/forum202029/messages/28.htm
>
>Eduard


So what?? He searched 24 hours to find a bug and then he came up with this??

Fritz 8.0.0.23 would play 3...d5 with big advantage already. After 3 moves with
the black pieces.
That is exactly what I want to see.
Its just silly to allow any complications if there is a safe way to get the full
point.

Btw, Fritz 8 would never play 2...c6 and this move is also not in the Fritz8.ctg
tree.

No chessplayer (except Eduard) would like to analyse such crap (3.a3??).

IMO the programers tried to find something against the apparent weaknesses of
Fritz, which does not hurt against other programs
It has still some drawbacks but hardly in practical play.
Frans Morsch might find better ways in the future.

Its not difficult to find other examples (die die Welt nicht braucht).

[D] r1bqkb1r/pppppppp/2n2n2/8/2B1P3/8/PPPP1PPP/RNBQ1KNR b kq - 0 2

1.e4 Nc6 2.Bc4 Nf6 3.Kf1??

Analysis by Fritz 8:

1. µ (-0.81): 3...e6 4.d3 d5 5.exd5 exd5 6.Lb5 Le7 7.Lxc6+ bxc6 8.Sf3 0-0 9.Se5
2. ³ (-0.63): 3...a6 4.d3 e6 5.Lg5 Le7 6.Sc3 0-0 7.Sf3 d5 8.Lb3 dxe4
3. ³ (-0.59): 3...Sa5 4.Ld3 e5 5.Sf3 Sc6 6.Lb5 Lc5 7.Sc3 0-0 8.d3
4. ³ (-0.53): 3...d5 4.exd5 Sxd5 5.d4 Dd6 6.Se2 Sb6 7.Ld3 Lg4 8.f3 Df6
5. ³ (-0.53): 3...e5 4.d3 Lc5 5.c3 d6 6.Sf3 0-0 7.d4 Lb6 8.Lg5
6. ³ (-0.50): 3...d6 4.d3 Sa5 5.Sd2 Sxc4 6.Sxc4 e5 7.Sf3 Le6 8.b3
7. ³ (-0.41): 3...g6 4.d3 Lg7 5.Sf3 0-0 6.Kg1 d5 7.exd5 Sxd5 8.De2 Lg4
8. ³ (-0.34): 3...h6 4.d3 d5 5.exd5 Sxd5 6.Sf3 a6 7.Sbd2 Sb6 8.Kg1 Sxc4
9. ³ (-0.34): 3...Tb8 4.d3 d5 5.exd5 Sxd5 6.Sf3 Lg4 7.Sbd2 Sa5 8.h3 Lh5
10. ³ (-0.34): 3...a5 4.Sc3 Sxe4 5.Sxe4 d5 6.Ld3 dxe4 7.Lxe4 e5
11. ³ (-0.31): 3...Sd4 4.Se2 Sxe2 5.Dxe2 d5 6.exd5 Sxd5 7.Sc3 Sb6 8.Ld3 c6 9.Le4
12. = (-0.22): 3...h5 4.Sc3 e6 5.Sf3 d5 6.exd5 exd5 7.Lb5 Le7 8.Kg1 0-0
13. = (-0.19): 3...Se5 4.Lb3 Sg6 5.Sc3 e6 6.d4 d5 7.exd5 exd5 8.Lg5 c6
14. = (-0.19): 3...b6 4.Sc3 Lb7 5.Sf3 Sxe4 6.Sxe4 d5 7.Ld3 dxe4 8.Lxe4 Dd6 9.d4
15. = (-0.19): 3...Sb4 4.e5 d5 5.Lb3 Sd7 6.d4 Sb6 7.c3 Sa6 8.Sd2
16. = (-0.16): 3...b5 4.Lxb5 Sxe4 5.Lxc6 dxc6 6.d3 Dd6 7.Df3 Sf6 8.Lf4
17. = (-0.16): 3...Tg8 4.d3 Se5 5.Lb3 d5 6.exd5 Sxd5 7.Dh5 g5 8.Lxd5
18. = (-0.09): 3...g5 4.d3 Lg7 5.Sc3 g4 6.Sge2 Sa5 7.Kg1 Sxc4
19. = (-0.03): 3...Sb8 4.e5 d5 5.Le2 Sfd7 6.Sf3 e6 7.Kg1 c5 8.d4 Sc6
20. = (0.06): 3...Sg8 4.d4 d6 5.Sf3 Sf6 6.Lb5 a6 7.Lxc6+ bxc6 8.Sbd2
21. ² (0.41): 3...Sg4 4.Lxf7+ Kxf7 5.Dxg4 e5 6.Sf3 Kg8 7.Dg3 Df6
22. ± (1.25): 3...Sxe4 4.d3 Sf6 5.Sc3 d5 6.Lb5 Lg4 7.Sf3 a6 8.Lxc6+ bxc6

depth 14

Michael





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