Author: Vincent Lejeune
Date: 01:45:52 12/15/05
Go up one level in this thread
On December 15, 2005 at 03:16:00, Chrilly Donninger wrote:
>>
>>
>>>Maybe Rybka is a Nimzo clone :-)
>>
>>
>>
>>No, maybe not. :)
>>
>>More interesting is - will HYDRA become a RYBKA clone? :)
>>
>One of the most important inventions in Computer chess was the Autoplayer.
>People have before played against other programms, but this was cumbersome.
>Since then the development is a (co-)evolution. The programmers react on the
>ideas of others. It is some sort of silent conversation. E.g. when Shredder came
>with his impressive search depths, the other programmers had to react too. One
>can not sit there and watch how Shreddere outsearches one ones creation. One
>also knows: There is stil a lot of potential in pruing. After all it works in
>Shredder.
>The same will happen with Rybka. It has the advantage of being a new species
>which is somewhat different to the current population. But the ecosystem will
>react on Rybka. Thats the way evolution works.
>
>A concrete Hydra-example: In the Match Topalov-Hydra, Bilbao 2004, Hydra got a
>passed pawn on d3 and was very happy about the position. Actually the idea was
>quite bad and we almost lost the game. So we reduced the value of central-passed
>pawns in the Middlegame. Rybka does not know about this and likes to push his
>d/e pawn. Hydra does not care, because it was told to avoid the
>"Topalovmatch-pawn-push" (it works always in both directions). I have increased
>the bonus now again slightly to avoid this problem against Rybka. And I will
>probably kick myself in the ass, if Hydra makes against a top GM the next time
>the same stupid move like in Bilbao.
>
>Chrilly
[d]1n1q1rk1/r3bppp/bp2p3/p1p1P3/3p2QP/2P1P1B1/PPBN1PP1/R3K2R b KQ h3 0 15
The eternal question, for humans too, is a pass pawn weak or strong ?
Here it seems quite simple after the seeing the Topalov moves. Humans ask : "How
black can protect this pawn ?" and then "How white can prevent black to play the
moves helping to protect the pawn ?"
It's strange hydra didn't found the best line here : all tries to protect the
pawn are stopped !
[Event "Man vs Machine 120'/40+60'"]
[Site "Bilbao Esp"]
[Date "2004.10.07"]
[Round "2"]
[White "Veselin Topalov"]
[Black "Hydra"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2757"]
[PlyCount "164"]
[EventDate "2004.??.??"]
1. d4 d5 2. c3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Bg3 O-O 6. Nd2 b6 7. Ngf3 c5 8. Ne5
a5 9. Bh4 Be7 10. Bd3 Nfd7 11. Bg3 Nxe5 12. dxe5 Ba6 13. Bc2 Ra7 14. Qg4 d4 15.
h4 d3 16. Bb3 Qc7 17. a4 Qc8 18. Bc4 Rd8 19. Bxa6 Qxa6 20. Qc4 Qc8 21. O-O-O
Qc6 22. f3 Qa8 23. Nb1 Rad7 24. Rd2 Nc6 25. Na3 Rd5 26. f4 R5d7 27. Kb1 Na7 28.
Rhd1 Qc6 29. Nb5 Nxb5 30. axb5 Qc8 31. e4 h6 32. Bf2 h5 33. Rxd3 Rxd3 34. Rxd3
Rd7 35. Rxd7 Qxd7 36. Kc2 Kf8 37. Qe2 g6 38. c4 Qd8 39. g3 Ke8 40. Qf3 Bf8 41.
Qe3 Qc7 42. Be1 Qd7 43. Bd2 Bh6 44. Kd1 Kf8 45. Ke2 Qd8 46. Bc3 Qd7 47. Qf3 Ke8
48. g4 hxg4 49. Qxg4 Qe7 50. Kf3 Qd8 51. Ke3 Qe7 52. h5 gxh5 53. Qxh5 Qf8 54.
Kf3 Qg7 55. Qg4 Qh7 56. f5 Kd7 57. Qh5 Qg7 58. b3 Bc1 59. Be1 Bb2 60. Bg3 Bc3
61. Bf4 Bd4 62. Bh2 Qg8 63. Qh6 Bc3 64. Bg3 Kc7 65. Qf6 Kd7 66. Bf4 Qh7 67. Kg4
Qg8+ 68. Bg5 Bd2 69. Qh6 Bc3 70. Qf6 Bd2 71. Kh5 Bxg5 72. fxe6+ fxe6 73. Qxg5
Qh8+ 74. Kg4 Qh7 75. Qf4 Ke8 76. Kg5 Qg7+ 77. Kh5 Qh8+ 78. Kg4 Qh7 79. Qf6
Qxe4+ 80. Kg5 Qg2+ 81. Kh6 Qh1+ 82. Kg7 Qb7+ {
83. Kg8 Qg2+ 84. Qg7 Qf3 85. Qg6+ Ke7 86. Qg5+ Ke8 87. Qg6+ Ke7 88. Qg7+ Ke8}
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