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Subject: Re: DJ sacrifice (Crafty vs Crafty )

Author: Uri Blass

Date: 23:05:14 02/05/03

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On February 06, 2003 at 01:30:13, J Mike wrote:

>
>I made the moves 16. g3 Qh2 17. f5 h5 and played Crafty vs Crafty (time control
>40 moves in 40 minutes)
>
>the final position after move 67 is probably a draw.
>
>Even if the sacrifice was unsafe (as it probably was), I don't think it would
>have been easy for Kasparov to win the game if he had played 16. g3 .. he could
>have even lost it, given he had less than an hour on the clock and it was only
>move 16.
>
>Everyone was shocked on ICC that Kasparov didn't try to win with g3, but now I
>think he probably made the right decision!  This position is not as easy as it
>looked earlier.
>
>I think we can say DJ's Bxh2 was an amazing move. It was a real sacrifice for
>initiative.  I don't think any other computer (or even older version of DJ)
>would have played it ..
>
>
>------------------------
>
>1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. cxd5 exd5 7. Nge2 Re8 8.
>O-O Bd6 9. a3 c6 10. Qc2 Bxh2+ 11. Kxh2 Ng4+ 12. Kg3 Qg5 13. f4 Qh5 14. Bd2
>Qh2+ 15. Kf3 Qh4 16. g3 Qh2 17. f5 h5 18. b4 Nd7 19. e4 Qh3 20. Rh1 Nh2+ 21.
>Rxh2 Qxh2 22. exd5 Nf6 23. Qd1 Qh3 24. Nf4 Qh2 25. Nfe2 Qh3 26. Nf4 Qh2 27.
>dxc6 Ng4 28. Ng2 Qh3 29. Be2 bxc6 30. Qh1 Nh2+ 31. Kf2 Bxf5 32. Nf4 Ng4+ 33.
>Bxg4 Qxh1 34. Rxh1 hxg4 35. d5 Rac8 36. Rh5 g6 37. Rh1 f6 38. Be3 g5 39. Nfe2
>cxd5 40. Bxa7 Be4 41. Nxe4 Rxe4 42. Bc5 Rc4 43. a4 Rc2 44. a5 Ra2 45. Re1 Kf7
>46. Kf1 Rh8 47. Nc3 Rh1+ 48. Bg1 Ra3 49. Ne2 Ra4 50. Rb1 Rh8 51. Nc3 Ra3 52.
>Nxd5 Rh3 53. b5 Rxa5 54. Kg2 f5 55. Bf2 f4 56. Nc3 f3+ 57. Kg1 Ra8 58. b6 Rah8
>59. Kf1 Rh1+ 60. Bg1 R8h2 61. b7 Rg2 62. Ne2 Rh8 63. Bd4 Rhh2 64. Ng1 f2 65.
>Ne2 Rh1+ 66. Kxg2 Rxb1 67. Kxf2 Kg6 (result?)

40/40 and crafty is not a serious analysis.

We need a correspondence game to get a better opinion which side is better after
g3(I am also not sure about it)
I analyzed 16...Qh2 17.f5 h5 with Deep Fritz6 and it got the following analysis
(you can see that the queens are traded in the main line)
I suspect that 17...h5 is not the best move(inspite of the fact that it was
proposed) and black needs to develop pieces.



[D]rnb1r1k1/pp3pp1/2p5/3p1P1p/3P2n1/P1NBPKP1/1PQBN2q/R4R2 w - h6 0 1

Analysis by Deep Fritz:

18.Nxd5--
  +-  (2.22)   Depth: 1/3   00:00:00
18.Nxd5-- cxd5
  ³  (-0.37)   Depth: 1/3   00:00:00
18.e4!
  ±  (1.13)   Depth: 1/4   00:00:00
18.e4! dxe4+ 19.Bxe4
  +-  (2.03)   Depth: 1/4   00:00:00
18.e4 dxe4+ 19.Bxe4 Nd7
  +-  (1.94)   Depth: 2/7   00:00:00
18.e4 dxe4+ 19.Bxe4 Nf6 20.Rh1
  +-  (1.91)   Depth: 3/10   00:00:00
18.e4 dxe4+ 19.Bxe4 Nf6 20.Rh1
  +-  (1.91)   Depth: 4/17   00:00:00  1kN
18.e4 dxe4+ 19.Bxe4 Nd7 20.Rae1 Ndf6
  +-  (1.94)   Depth: 5/15   00:00:00  5kN
18.e4 dxe4+ 19.Bxe4 Nd7 20.Rae1 Ndf6 21.Bd3
  +-  (1.81)   Depth: 6/20   00:00:00  16kN
18.Rac1!
  +-  (1.84)   Depth: 6/20   00:00:00  29kN
18.Rac1! Nd7 19.e4 dxe4+ 20.Nxe4 Ngf6 21.Rfe1
  +-  (1.88)   Depth: 6/20   00:00:00  36kN
18.Rae1!
  +-  (1.91)   Depth: 6/20   00:00:00  55kN
18.Rae1! Nd7 19.e4 dxe4+ 20.Nxe4 Ngf6 21.Nd6
  +-  (2.03)   Depth: 6/20   00:00:00  61kN
18.Rae1 Nd7 19.e4 Nb6 20.Bg5 dxe4+ 21.Bxe4 Bd7
  +-  (2.19)   Depth: 7/26   00:00:00  163kN
18.Rae1 Nd7 19.e4 Nb6 20.Bg5 dxe4+ 21.Bxe4 Nc4 22.Bf4
  +-  (2.19)   Depth: 8/31   00:00:00  322kN
18.Rae1 Nd7 19.e4 Nb6 20.Bf4 dxe4+ 21.Bxe4 Nc4 22.Qb3 Nb6
  +-  (2.25)   Depth: 9/31   00:00:03  1762kN
18.Rae1 Nd7 19.e4 Nb6 20.exd5 Nxd5 21.Nxd5
  +-  (2.22)   Depth: 10/33   00:00:05  3285kN
18.Rae1 Nd7 19.e4 Qh3
  +-  (2.22)   Depth: 11/38   00:00:12  7491kN
18.Rae1 Nd7 19.e4 Qh3
  +-  (2.06)   Depth: 12/38   00:00:29  17639kN
18.Rae1 Nd7 19.e4 c5 20.Nxd5 cxd4 21.Kf4
  +-  (1.88)   Depth: 13/40   00:01:13  44451kN
18.e4!
  +-  (1.91)   Depth: 13/42   00:02:26  91432kN
18.e4 dxe4+ 19.Bxe4 Nd7 20.Bg5 c5 21.Rae1 cxd4 22.Nxd4 Nge5+ 23.Kf4 Qh3
  +-  (1.75)   Depth: 14/46   00:06:52  258106kN
18.e4 dxe4+ 19.Bxe4 c5 20.dxc5 Nd7 21.c6 bxc6 22.Bf4
  +-  (1.69)   Depth: 15/47   00:23:25  886608kN
18.Rae1!
  +-  (1.72)   Depth: 15/47   00:27:21  1042597kN
18.Rae1--
  +-  (1.41)   Depth: 16/43   00:38:55  1433521kN
18.Rae1--
  +-  (1.41)   Depth: 16/54   01:30:20  3495280kN
18.e4!
  +-  (1.44)   Depth: 16/54   01:43:38  4035153kN
18.e4! dxe4+ 19.Bxe4 c5 20.Bf4 cxd4 21.Nxd4 Qxc2 22.Bxc2 Nh2+ 23.Kg2 Nxf1
  +-  (1.88)   Depth: 16/54   03:38:34  8641671kN

(blass, tel-aviv 06.02.2003)

Uri



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