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Subject: Re: What does your program play in this position?

Author: Geo Disher

Date: 05:26:52 02/07/99

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On February 06, 1999 at 12:57:28, blass uri wrote:

>
>On February 06, 1999 at 11:07:46, Geo Disher wrote:
>
>>On February 05, 1999 at 11:57:56, Djordje Vidanovic wrote:
>>
>>>A couple of days ago I reported on the successful performance of two French
>>>programs, Chess Wizard and Zchess, in the Aubervilliers rapid chess tournament.
>>>As this particular position may have been overlooked, and as I believe that it
>>>is worth analysing with different chess software, I'll try to bring it up again.
>>>
>>>White: GM Sekatchev, Black: Zchess 1.2:
>>>
>>>1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 Qb6 7. Nc3 Qb4 8. O-O
>>>Bxc3 9. a3 Qa5 10. bxc3 Qxc3 11. Rb1 Qa5 12. Bb2 f6 13. e5 f5 14. e6 Nf6 15. Qc1
>>>b6 16. Re1 O-O 17. Qh6 c4 18. dxc4 Bxe6 19. Rxe6 Rf7 20. Ng5 * 1-0
>>>
>>>
>>>on move 8, Black (Zchess 1.2) played 8...Bxc3.  Of the tested programs, the only
>>>one not yielding to the temptation was Zarkov 5 playing 8...Nf6, not bothering
>>>to capture the Knight, which is, of course, a good move.  Other programs, among
>>>them Crafty 16.0, according to Zchess's author Franck Zibi, tend to play the
>>>same bad move, 8...Bxc3.  More info, with comments by Franck 1. e4 c5 2. Nf3 Nc6
>>>3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 Qb6 7. Nc3 Qb4 8. O-OBxc3 9. a3 Qa5 10.
>>>bxc3 Qxc3 11. Rb1 Qa5 12. Bb2 f6 13. e5 f5 14. e6 Nf6 15. Qc1b6 16. Re1 O-O 17.
>>>Qh6 c4 18. dxc4 Bxe6 19. Rxe6 Rf7 20. Ng5 *Zibi, can be found at
>>>http://www.forum64.com/. Some tested programs are (AMD K6-2/300):
>>>
>>>ZChess 1.2 Bxc3 ?? 11 +0.80
>>>WChess 2000 Bxc3 ?? 11 +0.88
>>>Crafty 16.0 Bxc3 ?? 12 +0.13
>>>Chess Genius 6  Bxc3 ?? 8  -0.06
>>>Fritz 5.0 Bxc3 ?? 11 -0.25
>>>Zarkov 5 Nf6 ! :-)  6 -0.19
>>>
>>>What does your program play in this position?  Bob, you said that you could not
>>>reproduce 8...Bxc3.  Could you retry it on your Quad? Others?
>>>
>>>Regards,
>>>Djordje
>>I just ran this on Fritz 5.0 for about 3 minutes and it never showed BxC3 it
>>like Bg4 at -.47 and Bh3 at -.25. I was at ply 13/37.  Maybe I got the possition
>>wrong but I followed what is above.
>After Bg4 hxg4 is winning and After Bxh3 gxh3 is winning
>Uri
Sorry I had the wrong possition setup.



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