Author: Terry McCracken
Date: 20:40:45 01/06/06
Go up one level in this thread
On January 06, 2006 at 17:06:11, Sune Larsson wrote:
>I intend to write a modest article about Rybka on Swedish Chessforum. For this I
>would need two typical games from Rybka vs strong opposition - i.e. Fritz 9 and
>Fruit - where one could see the strong piece handling and middlegame from Rybka.
>Preferably where evals of position differ - and relatively long time control
>(like 40/40 and up) on rather fast hardware (= what's normal these days.)
>So, if you have some "Rybka memorials" - please post them here.
>
>Thanks.
>
>/S
Hi Sune,
I've a game that might be of interest, although it was played on a P-500 against
CM10 Botvinnik Personality X-Box which runs on a P-733. It's a G/60 and is
interseting how Rybka 1.0 Beta 32 bit handles a restricted position, gets
counterplay and wins with a combination.
I used Shredder 8 on Full Analysis;Annotation. It misses the nuances and can't
explain Rybkas sacrifice of the Queen-Side pawns for the initiative but picks up
later when in combination.
Still I think it's an interesting game as I thought Rybka may get into real
problems, but turned it around nicely.
[Event "Blitz:60'"]
[Site "none"]
[Date "2006.01.02"]
[Round "?"]
[White "CM10 Botvinnik"]
[Black "Rybka 1.0 Beta 32-bit"]
[Result "0-1"]
[ECO "A29"]
[Annotator "Shredder 8 (180s)"]
[PlyCount "164"]
{A29: English Opening: Four Knights Variation with 4 g3} 1. c4 Nf6 2. Nc3 e5 3.
g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. a3 Be7 8. d3 O-O 9. b4 Be6 10. O-O
a5 11. b5 Nd4 12. Nxe5 Nb3 13. Rb1 Nxc1 14. Qxc1 Ra7 15. Ne4 f6 16. Nc4 f5 17.
Ned2 f4 18. gxf4 Rxf4 19. Ne4 Nd5 20. e3 Rh4 21. f4 Qf8 22. Qb2 Kh8 23. f5 Bg8
24. Qf2 Rh6 25. a4 Qe8 26. Qg3 Ra8 27. Rbc1 Bh4 28. Qg4 Qe7 29. Qe2 Qb4 30. Qc2
Re8 31. Kh1 Rf8 32. d4 Qe7 33. Qd3 Nb4 34. Qe2 Bd5 35. Rf4 Bg8 36. Nxa5 Ra8 37.
Nxb7 Rxa4 38. Nbc5 Ra2 39. Qd1 Nd5 40. Rf3 g6 41. fxg6 Rxg6 42. Rc2 Ra5 43. Qb1
Qe8 44. Rb2 Qa8 45. Na6 Ra3 46. Rh3 Qd8 47. Qc1 Be6 48. Rd2 Ra5 49. Rf3 Bg4 50.
Rf7 Qg8 51. Rxc7 Bf5 52. Nc3 Nxc3 53. Qxc3 Rxb5 54. Nb4 Bh3 $1 {
a fitting end to a beautiful game} 55. Qa1 (55. Bxh3 Rg1# {
A beautiful mate combination}) 55... Qb8 (55... Rxg2 $6 56. d5+ Rg7 57. Rf2
Bxf2 58. Rxg7 Qxg7 59. Qa8+ Qg8 60. Qa1+ Qg7 61. Qa8+ Qg8 62. Qa1+ Qg7 $11) 56.
Ra7 Bxg2+ (56... Rxb4 $6 57. Be4 (57. Bxh3 $4 {
White should leave the bishop alone} Qxa7 58. Qf1 Qb7+ 59. d5 Bf2 60. Rxf2 Rb1
$19) 57... Qd6 58. Rda2 $11 (58. Bxg6 Qxg6 (58... hxg6 $6 59. e4 $11) 59. Ra8+
Kg7 60. Ra7+ Kh6 61. Rxh7+ Kxh7 62. Rc2 Qxc2 63. Qa7+ Kg6 64. Qa6+ Bf6 65. Qf1
Bxf1 66. e4 Qg2#)) 57. Rxg2 Rxb4 58. Rxg6 Rb1+ (58... hxg6 $4 {
going for material but overlooking...} 59. d5+ Rb2 60. Ra8 $18) 59. Rg1 Rxa1
60. Rgxa1 Qb5 61. Ra8+ (61. R7a2 Qf5 $19) 61... Kg7 62. R1a7+ (62. R8a7+ Kg6
63. R7a6+ Kf7 64. Ra7+ Be7 $19) 62... Kg6 63. Ra6+ Bf6 64. Ra1 Bg5 65. R8a2 (
65. R8a6+ Kh5 66. R6a5 Qb7+ 67. Kg1 Qf3 $19) 65... Qd3 66. Rg2 (66. Rf2 {
is not much help} Kh5 67. Ra5 Kh4 $19) 66... Kh6 67. Re1 (67. d5 {
doesn't change the outcome of the game} Bxe3 68. d6 Qxd6 $19) 67... Bxe3 68. d5
Bc5 69. d6 Bxd6 70. Rc1 (70. Rf2 {no good, but what else?} Qd5+ 71. Rg2 $19)
70... Kh5 71. Rcg1 (71. Rf2 {there is nothing better in the position} Qd5+ 72.
Rg2 $19) 71... Qf3 72. Rb1 Kh4 73. Rbb2 Kh3 74. Rbf2 (74. Rbd2 {
a fruitless try to alter the course of the game} Be5 75. Ra2 Qd1+ 76. Rg1 Qd3
77. Rf2 Qe4+ 78. Rgg2 Qe1+ 79. Rg1 Qxf2 80. Rg3+ Bxg3 81. hxg3 Qg2#) 74... Qd3
75. Rb2 Be5 76. Rbf2 (76. Rbd2 {doesn't change anything anymore} Qb1+ 77. Rg1
Qe4+ 78. Rgg2 Qe1+ 79. Rg1 Qxd2 80. Rg3+ Bxg3 81. hxg3 Qg2#) 76... Qb1+ 77. Rg1
Qe4+ 78. Rgg2 Qe1+ 79. Rg1 (79. Rf1 {does not improve anything} Qxf1+ 80. Rg1
Qf3+ 81. Rg2 Qxg2#) 79... Qxf2 80. Rg3+ Bxg3 81. hxg3 Qf3+ (81... Qg2#) 82. Kg1
Qg2# 0-1
[D]r2q1rk1/1pp1bppp/1n2b3/pP2N3/8/PnNP2P1/4PPBP/R1BQ1RK1 w - - 0 13
12.Nxe5!? Nb3 grabs the Bishop Pair.
[D]4q1bk/rpp1b1pp/7r/pP1n1P2/P1N1N3/3PP3/5QBP/1R3RK1 w - - 0 26
A somewhat cramped position for Rybka.
[D]5rbk/1pp1q1pp/7r/NP3P2/Pn1PNR1b/4P3/4Q1BP/2R4K b - - 0 36
CM10 Botvinnik goes for the Queen-Side Pawns
[D]6bk/2p1q1pp/7r/1PN2P2/1n1PNR1b/4P3/r3Q1BP/2R4K w - - 0 39
The Counterstrike has begun.
[D]q5bk/2p4p/N5r1/rP1n4/3PN2b/4PR2/1R4BP/1Q5K b - - 0 45
The beginning of the end.
[D]3q3k/2p4p/N3b1r1/1P1n4/3PN2b/r3P2R/1R4BP/2Q4K w - - 0 48
47...Be6! and White is in great pain, the win is in sight.
[D]1q5k/2R4p/6r1/1r6/1N1P3b/4P2b/3R2BP/Q6K w - - 0 56
55...Qb8! White is now helpless.
Terry
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.