Author: Omid David Tabibi
Date: 02:33:02 12/19/03
Go up one level in this thread
On December 19, 2003 at 00:37:15, Robert Hyatt wrote:
>On December 17, 2003 at 17:58:13, Omid David Tabibi wrote:
>
>>On December 17, 2003 at 15:11:04, Peter Berger wrote:
>>
>>>For information about setup and rules:
>>>http://www.talkchess.com/forums/1/message.html?336001
>>>
>>>Crafty 19.4 - Junior 8.0.0.2
>>>[D]2q1r1k1/5p1p/2P5/p1rn2p1/Qb1Nn3/6PP/1P4BK/R1B2R2 b - - 0 1
>>>
>>>Not a bad testposition at all - 26. ..Nxg3 is not so easy to find for some
>>>engines. White is toast.
>>
>>Falcon Graz running on GenuineIntel 733MHz 256MB:
>>depth time nodes nps score variation
>> 3/ 8 0.03 1k 34k -0.64 1...c8c7 1.a4b3 g8h8 2.g2e4 e8e4
>> 3/ 9 0.04 1k 42k -0.50 1...c5c4 1.a4d1 c8c7 2.g2e4 e8e4
>> 4/14 0.06 3k 53k -0.50 1...c5c4 1.a4d1 c8c7 2.g2e4 e8e4
>> 5/19 0.13 13k 102k -0.70 1...c5c4 1.f1d1 c8c7 2.a4b3 d5b6
>> 3.g2e4 e8e4
>> 5/19 0.16 16k 104k -0.57 1...c8c7 1.a4b3 d5f6 2.d4f5 c5c6
>> 3.f5h6 g8f8 4.g2e4 e8e4 5.c1g5
>> 6/21 0.25 28k 114k -0.83 1...c8c7 1.a4b3 d5f6 2.h2g1 c5e5
>> 3.c1e3
>> 6/21 0.37 42k 114k -0.70 1...c5c4 1.f1d1 c8c7 2.a4b3 d5b6
>> 3.g2e4 e8e4
>> 7/21 0.95 126k 132k -0.97 1...c5c4 1.f1d1 c8c7 2.a4b3 d5b6
>> 3.g2e4 e8e4 4.c1e3
>> 7/22 1.20 165k 137k -0.61 1...c8c7 1.a4b3 d5f6 2.a1a2 c5e5
>> 3.d4f5 g8h8
>> 8/23 2.85 395k 138k -0.44 1...c8c7 1.a4b3 b4d2 2.g2e4 e8e4
>> 3.c1d2 e4d4 4.d2e3 d5e3 5.b3e3 c5c2
>> 6.h2g1
>> 9/26 6.65 946k 142k -0.44 1...c8c7 1.a4b3 b4d2 2.g2e4 e8e4
>> 3.c1d2 e4d4 4.d2e3 d5e3 5.b3e3 c5c2
>> 6.h2g1
>>10/28 19.54 2904k 148k -0.18 1...c8c7 1.a4b3 b4d2 2.g2e4 e8e4
>> 3.c1d2 e4d4 4.d2g5 c5c6 5.a1e1 c6e6
>>10/32 28.32 4291k 151k -0.14 1...e4g3
>>10/32 34.99 5339k 152k 0.28 1...e4g3 1.h2g3 c8c7 2.g3f2 c7e5
>> 3.f2g1 e5d4 4.g1h1 d5c7 5.a4b3 e8e6
>> 6.h1h2
>>11/37 58.43 9054k 154k 0.33 1...e4g3 1.h2g3 c8c7 2.g3f2 c7e5
>> 3.d4f3 e5e2 4.f2g1 c5c2 5.f3e1 b4e1
>> 6.a4g4 e1f2 7.g1h1 e2g4 8.h3g4
>>
>>
>>A classical example of a game where evaluation is more important than 10 to 1
>>time handicap :)
>
>Yes, but _not_ the way you think. How many times do you do that sac where
>it is _wrong_? knight for pawns is only good if it leads to an immediate
>tactical win.
Really? Take another look at the above example. In Sicilian you have many
positionally correct knight sacrifices on b5 and e6.
>Your PV isn't showing that. Play on ICC enough and you will
>see where that leads to trouble. That's why I have the "bad trade" code
>which is what is making _this_ particular case hard to see. But it fixes
>far more of these cases than it hurts.
>
Falcon positionally sacrifices minor pieces very rarely as it practically
evaluates a minor piece being worth about 4 pawns. But in the above example it
was correct.
>So there is evaluation, and there is evaluation.
>
>What you think is good is not necessarily so most of the time.
>
>
>>
>>
>>
>>>
>>>Crafty itself can't find it in an acceptable time on my Athlon 2600+ at all.
>>>Ruffian and Yace need some time too.
>>>
>>>25. ..g5 is even more difficult if it has to be found with the right idea.
>>>
>>>Junior played this as a positional sacrifice in fact (who says computers can't
>>>sac?) and still had some work to do to find the next moves.
>>>
>>>It hit Crafty (and the spectator ;) ) completely out of the blue, although if
>>>you have seen it is not so tough to understand why it works.
>>>
>>>Thanks for the chess lesson, Junior!
>>>
>>>Peter
>>>
>>>(all comments without any warranty at all of course)
>>>
>>>Standing: Junior 4 - Crafty 4 ( 7 draws)
>>>
>>>Peter
>>>
>>>[Event "Blitz:120'+10"]
>>>[Site "Berlin"]
>>>[Date "2003.12.16"]
>>>[Round "15"]
>>>[White "Crafty 19.4"]
>>>[Black "Junior 8.0.0.2"]
>>>[Result "0-1"]
>>>[ECO "E46"]
>>>[Annotator "P233-PIV2.0GHz"]
>>>[PlyCount "148"]
>>>[EventDate "2003.??.??"]
>>>[TimeControl "7200+10"]
>>>
>>>{16MB, Junior8.ctg, P233MMX} 1. d4 {0} Nf6 {1} 2. c4 {3} e6 {0} 3. Nc3 {2} Bb4
>>>{0} 4. e3 {(f3) 4} O-O {0} 5. Nge2 {(Ld3) 4} d5 {0} 6. a3 {4} Be7 {0} 7. cxd5 {
>>>4} exd5 {0} 8. g3 {(b4) 4} a5 {0} 9. Bg2 {4} c6 {0} 10. O-O {4} Re8 {0} 11. h3
>>>{3} Na6 {0} 12. f3 {(Ld2) 271} b5 {0.02/17 427} 13. e4 {255} b4 {0.29/15 68}
>>>14. Na4 {204} Nc7 {0.18/15 0} 15. Nb6 {200} Rb8 {0.17/16 0} 16. Nxc8 {204} Qxc8
>>>{0.26/15 235} 17. axb4 {(e5) 199} Bxb4 {0.19/15 494} 18. Qc2 {5} c5 {
>>>0.27/15 313} 19. Bf4 {(e5) 5} Rb7 {0.01/13 156} 20. dxc5 {197} Rb5 {
>>>-0.08/13 331} 21. c6 {(Le3) 137} Rc5 {-0.13/13 194} 22. Qa4 {(Dd3) 5} dxe4 {
>>>-0.26/14 419} 23. fxe4 {(Ld6) 10} Nxe4 {-0.15/13 212} 24. Kh2 {(Tad1) 240} Nd5
>>>{-0.50/13 283} 25. Nd4 {(Tad1) 299} g5 {-1.03/14 279} 26. Bc1 {168} Nxg3 {
>>>-0.73/13 178} 27. Kxg3 {490} Qc7+ {-1.33/13 0} 28. Kf2 {137} Rc4 {-1.63/13 177}
>>>29. Kg1 {(Lxg5) 6} Rxd4 {-1.92/11 140} 30. Qc2 {(Lxg5) 5} h6 {-1.57/12 268} 31.
>>>Kh1 {(Df2) 146} Re6 {-1.71/12 83} 32. Qf2 {143} Bc5 {-1.19/13 29} 33. Rxa5 {
>>>(Ld2) 116} Rf6 {-1.81/11 21} 34. Rxc5 {(Ta8+) 134} Rxf2 {-1.75/15 317} 35. Rxf2
>>>{5} Qb6 {-2.22/14 280} 36. Rcc2 {6} Rd1+ {-1.99/14 144} 37. Rf1 {5} Qd4 {
>>>-1.99/15 125} 38. Rc4 {5} Qxc4 {-1.95/14 45} 39. Rxd1 {4} Ne7 {-2.17/14 63} 40.
>>>Rd8+ {93} Kh7 {-2.18/16 0} 41. Bd2 {172} Nxc6 {-2.36/16 0} 42. Re8 {122} Nd4 {
>>>-2.75/16 0} 43. Bc3 {(Te1) 142} Ne6 {-2.56/14 86} 44. Re7 {(Kg1) 120} Kg6 {
>>>-2.74/15 94} 45. Rd7 {17} Qe2 {-3.09/14 30} 46. Rd2 {(Td6) 127} Qe1+ {
>>>-3.15/15 55} 47. Kh2 {4} Qe3 {-3.21/15 23} 48. Kh1 {87} f5 {-3.73/16 0} 49. Rc2
>>>{(Kh2) 516} f4 {-4.61/15 72} 50. Bf1 {149} f3 {-6.96/15 0} 51. Bb4 {(La5) 426}
>>>f2 {-7.51/12 18} 52. Rc4 {323} Qe1 {-9.04/17 0} 53. Kg2 {75} Nf4+ {-9.22/17 1}
>>>54. Rxf4 {20} gxf4 {-9.52/16 83} 55. Bc5 {(h4) 5} Qe4+ {-9.52/15 29} 56. Kxf2 {
>>>38} Qc2+ {-9.82/15 25} 57. Kf3 {433} Qxc5 {-12.58/17 0} 58. Bd3+ {(h4) 382} Kg5
>>>{-15.42/14 37} 59. h4+ {5} Kxh4 {-#14/14 49} 60. Kxf4 {4} Qd4+ {-#14/3 4} 61.
>>>Be4 {15} h5 {-#14/3 15} 62. Kf3 {(Kf5) 44} Qxe4+ {-#14/3 0} 63. Kxe4 {(Kf2) 40}
>>>Kg3 {-#14/1 1} 64. b4 {4} h4 {-#13/1 0} 65. b5 {3} h3 {-#12/1 0} 66. b6 {3} h2
>>>{-#11/1 0} 67. Kd5 {(Kd3) 2} h1=Q+ {-#10/1 0} 68. Kd6 {(Kc4) 4} Qb7 {-#9/1 0}
>>>69. Kc5 {4} Kf4 {-#8/1 0} 70. Kd4 {4} Qxb6+ {-#7/1 0} 71. Kc4 {(Kc3) 3} Ke4 {
>>>-#6/1 0} 72. Kc3 {3} Qd4+ {-#5/1 0} 73. Kb3 {4} Kd3 {-#4/1 0} 74. Ka2 {6} Kc2 {
>>>-#3/1 0} 0-1
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