Author: Terry Presgrove
Date: 22:13:33 02/05/99
Go up one level in this thread
On February 05, 1999 at 14:16:07, blass uri 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? > >I found crafty16.4 as an engine for Junior5 did not like Bxc3 from the first >second. >It prefers Bd7 with an evaluation(the evaluation is the advantage for white in >pawns): >0.25:7,0.27:8,0.41:9,0.36:10,0.50:11,0.57:12 and reject Bxc3 also at depth 12. > >Uri > >Uri >> >>Regards, >>Djordje Rebel 10 on my k6350 takes 10:34 to find nf6 /eval-.17 interestingly finds nf6 using EPD diagam in 9:49/eval-.07 I had anti-GM off for analysis. TP
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