Author: Thomas Lagershausen
Date: 11:48:03 05/12/03
[D]2r2rk1/1bq1bppp/p2ppn2/1p2n3/2P1P3/1PN1BP1P/P1NQB1P1/2R2RK1 w - -
Amir Ban had announced in his annotations that Deep Junior 8 here had planned to
play the sacrifice 18.cxb5.But after this black wins easily the game with
18...Qxc3 19.Qxc3 Rxc3 20.bxa6 Ba8 21.Bd4 Rcc8 22.a7 Nc6 (or ...Ned7)23.Ba6 Nxd4
24.Nxd4 Rxc1 25.Rxc1 d5 26.exd5 Nxd5 and white has a lost position.
It looks like that Junior 8 will need a lot of improvements to play on the level
of CM 9000 SKR or Shreddder 7.04 for my opinion.
Here the pgn of the game with the annotations givven by Amir Ban:
[Event "X3D man-machine match"]
[Site "New York City"]
[Date "2003.02.02"]
[Round "4"]
[White "*Deep Junior 8"]
[Black "*Kasparov, Garry"]
[Result "1/2-1/2"]
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8.
Na3 Nd7
{Kasparov took here 20 minutes to take Deep Junior out of book. Is that any way
to spend your time ?}
9. Nc2 Be7 10. Be2 b6 11. O-O Bb7 12. h3
{It's already clear that this game is evolving in a different way than previous
ones. Kasparov, whether out of choice or out of necessity, is not grabbing the
initiative and is letting Deep Junior develop its game. He may be using Levy's
"Do nothing, but do it well" advice, essentially meaning that if the program is
given enough rope it will hang itself. This move is somewhat pointless, but in
the end it didn't matter}
12... O-O 13. Be3 Rc8 14. Qd2 Nce5 15. b3 Nf6 16. f3
{An alternative was f4 followed by Bf3, but the great merit of this move is that
it focuses the program on the queenside for the rest of the game}
16... Qc7 17. Rac1
{Suddenly things get exciting. This allows 17... b5, after which Deep Junior
would have sacrificed a piece by 18. cxb5. Although the masters in the computer
room shook their head in disapproval, I personally would welcome this discussed
over the board. Kasparov did not take up the challenge}
17... Rfe8 18. a3 Ned7
{Same challenge again, declined again. This is a victory of sorts}
19. Rfd1 Qb8 20. Bf2 Rcd8 21. b4
{The commentary by Ashley and Seirawan devotes a lot of time to black's possible
strikes against white's supposed weaknesses, but it's becoming hard to deny that
white is taking the advantage}
21... Ba8 22. a4 Rc8 23. Rb1 Qc7 24. a5
{That's the right idea, but was it played too soon ? Deep Junior played this
immediately to Qc7, after its evaluation dropped somewhat, but not enough to
trigger more time}
24... bxa5 25. b5 Bb7 26. b6 Qb8 27. Ne3 Nc5 28. Qa2 Nfd7 29. Na4 Ne5 30. Nc2
Ncd7 31. Nd4 Red8 32. Kh1 Nc6 33. Nxc6 Rxc6 34. Kg1
{This move as well as the 32nd betray an indecisiveness about how to proceed in
this position. Computer programs do not play like masters. Masters often follow
a plan that is set in operative terms. The program's plan is its evaluation
function, which is an implicit plan and it's up to the search to find the best
way to execute. Every move is a fresh look into that problem. Sometimes this
search comes up blank}
34... h6 35. Qa3
{The new plan is to pressure the d6 pawn, which is going to be pinned in three
different directions}
35... Rdc8 36. Bg3 Bf8 37. Qc3 Ne5 38. c5
{38. Bxe5 must have been the way to win, but Deep Junior's evaluation is already
blinded by winning chances that will soon prove to be non-existent}
38... Nd7 39. Qxa5 Nxc5 40. Nxc5 Rxc5 41. Qa4
{Now if black tries to hold on to the pawn by 41... a5 42. Bb5 will be painful}
41... R5c6
{Kasparov now has time to think, and he spends more than 20 minutes over this
move, and finds a way to hold the draw}
42. Bf2 d5 43. Bxa6 Bc5 44. Bxc5 Rxc5 45. Bxb7 Qxb7 46. exd5 exd5 47. Qa7 R5c7
{Deep Junior gets excited with +2 scores, but in the computer room we were less
excited as we have been discussing the ensuing endgame for some time and
recognizing it as a draw}
48. Qxb7 Rxb7 49. Rxd5 Rc6 50. Rdb5 h5
{The only chance for a win is if the rooks leave the b6 pawn to create mayhem on
the kingside pawns. Kasparov shuts off all such possibilities}
51. Kf2 Re6 52. f4 g6 53. Kg3 Kg7 54. Kh4 Kh6 55. R1b4 Rd6 56.g3 f6 57. g4 hxg4
58. hxg4 Kg7 59. Rb3 Rc6 60. g5 f5 61. Rb1 {Draw Agreed} 1/2-1/2
TL
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