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Subject: Re: Rybka 1.0 Announcement

Author: Timothy J. Frohlick

Date: 02:14:33 12/05/05

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Vas,

Let us know how many of us downloaded your program for testing. So far Rybka is
overpowering Toga II 1.1 .  I have noticed that Rybka sometimes gets a little
too cocky and ends up losing to strong attacks on its king. It is, however, a
very fun program. I agree with Fernando about the virtues of your program.


Here is a game that illustrates this king attack weakness very well. Of course,
Toga II 1.1 is well known for this ability to attack the king.

[Event "Blitz:5'"]
AMD 1500 512 MB RAM

[Date "2005.12.05"]
[Round "2"]
[White "Toga II 1.1"]
[Black "Rybka 1.0 Beta 32-bit"]
[Result "1-0"]
[ECO "A45"]
[Annotator "0.38;0.16"]
[PlyCount "87"]
[TimeControl "300"]

{W=11.4 ply; 487kN/s  B=10.2 ply; 46kN/s} 1. d4 {[%emt 0:00:00]} Nf6 {
[%emt 0:00:00]} 2. Bg5 {[%emt 0:00:00]} Ne4 {[%emt 0:00:00]} 3. Bf4 {
[%emt 0:00:00]} d5 {[%emt 0:00:00]} 4. e3 {[%emt 0:00:00]} c5 {[%emt 0:00:00]}
5. Bd3 {[%emt 0:00:00]} Nf6 {Both last book move [%emt 0:00:00]} 6. Nc3 {
[%eval 38,11] [%emt 0:00:10]} c4 {(Qb6) [%eval 16,10] [%emt 0:00:08]} 7. Be2 {
[%eval 48,12] [%emt 0:00:08]} Qb6 {(Qa5) [%eval 20,11] [%emt 0:00:10]} 8. Rb1 {
[%eval 51,12] [%emt 0:00:12]} Nc6 {(Qa5) [%eval 22,11] [%emt 0:00:08]} 9. Nf3 {
[%eval 63,12] [%emt 0:00:09]} Bf5 {(e6) [%eval 26,10] [%emt 0:00:06]} 10. O-O {
(Nh4) [%eval 50,11] [%emt 0:00:12]} Nb4 {(h6) [%eval 31,10] [%emt 0:00:13]} 11.
Ne1 {(Rc1) [%eval 76,11] [%emt 0:00:16]} Qa5 {[%eval 30,9] [%emt 0:00:17]} 12.
a3 {[%eval 72,12] [%emt 0:00:08]} Nc6 {[%eval 22,10] [%emt 0:00:04]} 13. Nf3 {
[%eval 82,12] [%emt 0:00:19]} O-O-O {(h6) [%eval 34,10] [%emt 0:00:08]} 14. Nh4
{(Ne5) [%eval 102,11] [%emt 0:00:09]} Bd7 {(Bg6) [%eval 22,9] [%emt 0:00:03]}
15. Qc1 {[%eval 132,12] [%emt 0:00:08]} e6 {[%eval 22,11] [%emt 0:00:06]} 16.
b4 {[%eval 114,12] [%emt 0:00:10]} cxb3 {[%eval 36,11] [%emt 0:00:07]} 17. Rxb3
{[%eval 119,11] [%emt 0:00:05]} Rg8 {(h6) [%eval 38,10] [%emt 0:00:06]} 18. Nb5
{(Nf3) [%eval 99,11] [%emt 0:00:10]} Ne8 {(e5) [%eval 30,10] [%emt 0:00:05]}
19. Nf3 {[%eval 128,11] [%emt 0:00:05]} a6 {[%eval 36,11] [%emt 0:00:10]} 20.
Nc3 {[%eval 142,11] [%emt 0:00:03]} f6 {(Bd6) [%eval 25,10] [%emt 0:00:05]} 21.
Qb2 {[%eval 133,11] [%emt 0:00:06]} g5 {[%eval 21,10] [%emt 0:00:03]} 22. Bg3 {
[%eval 125,11] [%emt 0:00:05]} b5 {[%eval 113,12] [%emt 0:00:30]} 23. a4 {
(Rb1) [%eval 138,10] [%emt 0:00:06]} b4 {[%eval 55,10] [%emt 0:00:02]} 24. Na2
{[%eval 169,11] [%emt 0:00:06]} g4 {(Nd6) [%eval 76,10] [%emt 0:00:06]} 25. Nd2
{(Ne1) [%eval 213,11] [%emt 0:00:04]} h5 {(Kb7) [%eval 68,9] [%emt 0:00:04]}
26. c3 {[%eval 218,11] [%emt 0:00:06]} h4 {(Qb6) [%eval 115,8] [%emt 0:00:01]}
27. Bxh4 {[%eval 281,11] [%emt 0:00:06]} Qb6 {[%eval 166,9] [%emt 0:00:05]} 28.
cxb4 {(Rc1) [%eval 295,11] [%emt 0:00:06]} Na7 {
(Bd6) [%eval 131,8] [%emt 0:00:06]} 29. b5 {(Rc1+) [%eval 346,9] [%emt 0:00:03]
} axb5 {[%eval 165,8] [%emt 0:00:02]} 30. axb5 {
(Rc1+) [%eval 333,9] [%emt 0:00:03]} Kb7 {(Bd6) [%eval 198,8] [%emt 0:00:04]}
31. Nc3 {(Nb4) [%eval 404,10] [%emt 0:00:03]} Nc8 {
(Bd6) [%eval 285,9] [%emt 0:00:08]} 32. Na4 {[%eval 543,11] [%emt 0:00:03]} Qa7
{(Qc7) [%eval 360,9] [%emt 0:00:03]} 33. Ra1 {[%eval 575,11] [%emt 0:00:05]}
Kb8 {[%eval 432,9] [%emt 0:00:05]} 34. Nc5 {(b6) [%eval 693,11] [%emt 0:00:04]}
Qb6 {[%eval 462,8] [%emt 0:00:02]} 35. Bg3+ {
(Qc3) [%eval 689,10] [%emt 0:00:04]} e5 {[%eval 454,9] [%emt 0:00:03]} 36. Ra6
{(Qc3) [%eval 728,11] [%emt 0:00:06]} Bxc5 {[%eval 495,11] [%emt 0:00:08]} 37.
Rxb6+ {(Rc3) [%eval 736,10] [%emt 0:00:02]} Bxb6 {[%eval 434,11] [%emt 0:00:03]
} 38. dxe5 {[%eval 736,11] [%emt 0:00:04]} Nc7 {
(Be6) [%eval 469,10] [%emt 0:00:06]} 39. exf6 {[%eval 757,10] [%emt 0:00:03]}
Be6 {(Rg5) [%eval 504,9] [%emt 0:00:06]} 40. Rc3 {[%eval 761,9] [%emt 0:00:02]}
Bf7 {(Rge8) [%eval 533,9] [%emt 0:00:03]} 41. Nb3 {
(Rc6) [%eval 839,11] [%emt 0:00:03]} Rd6 {(Rd7) [%eval 861,11] [%emt 0:00:33]}
42. Qa3 {[%eval 1091,10] [%emt 0:00:03]} Rgd8 {
(d4) [%eval 879,10] [%emt 0:00:02]} 43. Bxg4 {
(Bxd6) [%eval 1135,11] [%emt 0:00:03]} Be6 {[%eval 1019,10] [%emt 0:00:05]} 44.
Bxd6 {[%eval 1309,11] [%emt 0:00:03]} 1-0

[D]1knr2r1/2n2b2/1b3P2/1P1p4/6p1/1NR1P1B1/1Q2BPPP/6K1 b - - 0 41

which leads to:

[D]2kr4/2Q2b2/1P1r1P2/1Bnp4/6p1/4P3/5PPP/6K1 b - - 0 49

I also noticed that instead of announcing mate in X that your program gave an
eval score of -320 for itself.

Well done.

Tim






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