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Subject: Re: hard test position - Hiarcs 9 after 18h not found

Author: Vincent Lejeune

Date: 00:27:45 04/04/04

Go up one level in this thread


On April 01, 2004 at 20:10:21, Uri Blass wrote:

>This is from my correspondence game
>
>How much time does your program need to avoid Qxb2(I played Qc4 and won against
>vladimir turkov)
>
>I decided based on analysis that Qc4 is better but I believe that programs can
>avoid Qxb2 after many hours of analysis(I found that white has probably a draw
>after Qxb2 when Qc4 gives black the better position)
>
>[D]3r1rk1/pp2b1pp/1n3p2/4p3/7Q/2P1B1N1/PP2qPPP/R4RK1 b - - 0 18
>
>
>Here is the game
>
>[Event "40'/40"]
>[Site "Tel-Aviv"]
>[Date "2004.03.29"]
>[Round "?"]
>[White "New game"]
>[Black "Yace Paderborn"]
>[Result "*"]
>[ECO "B22"]
>[Annotator "Blass,Uri"]
>[PlyCount "78"]
>[TimeControl "40/2400:0/0:0/0"]
>
>{64MB, Shredder7.ctg, URI-PC
>} 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3
>Nc6 6. Bc4 Nb6 7. Bb3 d5 8. exd6 Qxd6 9. O-O Be6 10. Bxe6 Qxe6 11. Nxd4 Nxd4
>12. Qxd4 Rd8 13. Qh4 Qe2 14. Nd2 e5 15. Ne4 Be7 16. Bg5 f6 17. Be3 O-O 18. Ng3
>Qc4 19. Qh3 g6 20. Rfe1 Rd3 21. Bxb6 axb6 22. Qh6 Rfd8 23. Qc1 b5 24. Re4 Qc7
>25. Nf1 f5 26. Re2 e4 27. a3 Kg7 28. Qe1 Qc4 29. Rc2 Bg5 30. Qe2 h5 31. Re1 Qb3
>32. g3 h4 33. Rb1 hxg3 34. fxg3 Rf3 35. g4 Qd5 36. c4 Qd4+ 37. Kh1 fxg4 38.
>cxb5 e3 39. Ng3 Rf2 *
>
>Uri

AMD barton 2800+, 384 MB hash

Analysis by Hiarcs 9:

1...Dxb2 2.Cf5 Tf7 3.Tfb1 Dxc3 4.Dg4
  µ  (-1.02)   Profondeur: 8/15   00:00:00
1...Dxb2 2.Cf5 Tf7 3.Tfb1 Dxc3 4.Dg4
  µ  (-1.02)   Profondeur: 8/15   00:00:00
1...Dxb2 2.Cf5 Tf7 3.Tfb1 Dxc3 4.Dg4
  µ  (-1.02)   Profondeur: 8/15   00:00:00
1...Dxb2 2.Cf5 Tf7 3.Tfb1 Dxc3 4.Dg4
  µ  (-1.02)   Profondeur: 8/15   00:00:00
1...Dxb2 2.Cf5 Tf7 3.Tfb1 Dxc3 4.Dg4
  µ  (-1.02)   Profondeur: 8/15   00:00:00  1kN
1...Dxb2 2.Cf5 Tf7 3.Tfb1 Dxc3 4.Dg4
  µ  (-1.02)   Profondeur: 8/15   00:00:00  1kN
1...Dxb2 2.Cf5 Tf7 3.Tfb1 Dxc3 4.Dg4
  µ  (-1.02)   Profondeur: 8/15   00:00:00  1kN
1...Dxb2 2.Cf5 Tf7 3.Tfb1 Dxc3 4.Dg4
  µ  (-0.77)   Profondeur: 8/22   00:00:00  144kN
1...Dxb2 2.Cf5 Fa3 3.Dg3
  µ  (-0.77)   Profondeur: 8/22   00:00:01  307kN
1...Dxb2 2.Cf5 Fa3 3.Dg3 Td7 4.Fc1 Dxa1 5.Fxa3 Dxa2 6.Ch6+ Rh8 7.Fxf8
  ³  (-0.62)   Profondeur: 9/26   00:00:04  1199kN
1...Dxb2 2.Cf5 Tf7 3.Dg4 Rh8 4.c4 Da3 5.Tfc1
  ³  (-0.63)   Profondeur: 10/29   00:00:17  4529kN
1...Dxb2 2.Cf5 Tf7 3.Dg4 Rh8 4.Tad1 Txd1
  µ  (-0.71)   Profondeur: 11/32   00:00:59  15899kN
1...Dxb2 2.Cf5 Fa3 3.Tab1 De2 4.c4 Dxc4 5.Dxc4+ Cxc4 6.Txb7 Tf7 7.Txf7 Rxf7
8.Fxa7 Td2 9.Ta1
  µ  (-0.77)   Profondeur: 12/38   00:04:32  70092kN
1...Dxb2 2.Dg4 Rh8 3.Cf5 Tf7 4.c4 Ff8 5.Tfb1 Dc3 6.Fxb6 axb6
  ³  (-0.69)   Profondeur: 13/42   00:19:59  300958kN
1...Dxb2 2.Dg4 Rh8 3.Cf5 Tf7 4.Tad1 Txd1 5.Txd1 Ff8 6.Cd6 Fxd6 7.De6 Tf8 8.Dxd6
Tg8
  ³  (-0.69)   Profondeur: 14/46   00:48:54  745595kN
1...Dxb2 2.Cf5 Fa3 3.Fh6 Td7 4.Dg4 Tff7 5.Tad1 Db5 6.Txd7 Dxd7 7.Td1 Da4 8.Td8+
  ³  (-0.58)   Profondeur: 15/46   03:15:14  2945496kN
1...Dxb2 2.Cf5 Tf7 3.Dg4 Rh8 4.Tad1 Txd1 5.Txd1
  ³  (-0.34)   Profondeur: 16/48   05:29:03  4946781kN
1...Dxb2 2.Cf5 Tf7 3.Dg4 Rh8 4.Tad1 Txd1 5.Txd1 Db5 6.h3 Dc6
  ³  (-0.32)   Profondeur: 17/51   15:36:51  13739170kN




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