Author: Olivier Deville
Date: 02:03:24 10/08/05
Go up one level in this thread
On October 08, 2005 at 04:42:35, Günther Simon wrote:
>On October 08, 2005 at 04:05:05, Gabor Szots wrote:
>
>>On October 08, 2005 at 03:53:54, Günther Simon wrote:
>>
>>>On October 08, 2005 at 03:42:17, Gabor Szots wrote:
>>>
>>>>Here is another example of the List 512 EGTB bug. Anyone knows if this will ever
>>>>be fixed? Or is it already fixed but will never be released?
>>>>
>>>>Shall I use List without EGTB's?
>>>>
>>>>Can the author be contacted?
>>>>
>>>>[Event "45 Minuten/Partie + 15 Sekunden/Zug"]
>>>>[Site "Engine Match"]
>>>>[Date "2005.10.07"]
>>>>[Round "1"]
>>>>[White "Ruffian 2.1.0"]
>>>>[Black "List 512"]
>>>>[Result "1/2-1/2"]
>>>>
>>>...
>>>>0s} Rg1 {+M-1381/31 0s} 117. Ka3 {-M1/1 0s} Rg2 {+M-1380/31
>>>>0s} 1/2-1/2
>>>>
>>>>Gábor
>>>
>>>The author knows the problem since very long(> 1 year at least), but he never
>>>released a public fix. Since I know the bug I let List always play without
>>>tablebases, because then it won't be unable to mate the lone King.
>>>(Contacting the author again for this matter is useless...)
>>>
>>>Guenther
>>
>>I am also aware of the problem for a long time. However, I used to have the
>>attitude that if the author says that his engine is EGTB capable then I will use
>>EGTB's for that engine. If it has bugs, it shall pay for it. The same is true
>>e.g. for Betsy, it's been losing a lot of games due to an EGTB bug making her
>>sacrifice all her pieces.
>>
>>Gábor
>
>
>No one is forced to run a program into a known bug, which can be easily
>avoided.(Like eg. for LG Evolution with big book...)
>
>(never heard of your Betsy bug BTW)
>
>Guenther
Hi Gabor, Guenther
In my opinion, both attitudes are respectable : following the author's
recommendations or trying to fix/hide the bug.
I have experienced the Betsy bug several times. Here is an example :
[Event "ChessWar VII C 40m/20'"]
[Site "CHESSWAR"]
[Date "2005.07.15"]
[Round "6.10"]
[White "Betsy 6.51"]
[Black "Capture R01"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2204"]
[BlackElo "2169"]
[PlyCount "152"]
[EventDate "2005.??.??"]
1. g3 g6 2. d4 Bg7 3. Bg2 Nf6 4. e4 d6 5. Nc3 O-O 6. Nf3 {+0.19/11 33} 6... c5
{+0.06/13 62} 7. dxc5 {+0.31/11 33} 7... dxc5 {+0.08/13 67} 8. Qxd8 {
+0.31/11 33} 8... Rxd8 {0.00/13 23} 9. O-O {+0.26/11 33} 9... Nc6 {-0.02/12 33}
10. Be3 {+0.26/11 33} 10... b6 {+0.17/12 27} 11. e5 {+0.20/11 33} 11... Ng4 {
-0.02/12 20} 12. Bf4 {+0.27/11 33} 12... Ba6 {-0.11/11 21} 13. Rfe1 {
+0.25/11 33} 13... Nb4 {-0.40/12 36} 14. Rac1 {+0.41/11 33} 14... Rac8 {
-0.50/12 34} 15. Nh4 {+0.42/11 33} 15... Nc6 {-0.31/12 22} 16. Bh3 {+0.56/12 32
} 16... h5 {+0.02/12 31} 17. f3 {+0.72/11 33} 17... Ngxe5 {+0.10/14 28} 18.
Bxc8 {+0.57/12 33} 18... Bxc8 {-0.07/13 30} 19. Rcd1 {+0.58/11 33} 19... Rxd1 {
0.00/13 22} 20. Nxd1 {+0.40/13 33} 20... Nc4 {+0.02/13 28} 21. c3 {+0.24/12 33}
21... Bf6 {+0.23/13 31} 22. b3 {+0.25/12 33} 22... Na3 {+0.32/13 20} 23. Bc1 {
+0.26/13 33} 23... Nb1 {+0.29/13 29} 24. Re3 {+0.15/13 33} 24... c4 {
+0.32/12 27} 25. bxc4 {+0.04/12 33} 25... Ne5 {+0.51/14 53} 26. c5 {+0.38/13 33
} 26... bxc5 {+0.17/14 34} 27. c4 {+0.51/13 33} 27... g5 {+0.15/14 30} 28. Rb3
{+0.42/13 33} 28... Nxc4 {+0.11/13 23} 29. Bxg5 {+0.47/13 33} 29... Bxg5 {
+0.08/14 27} 30. Rxb1 {+0.54/13 33} 30... Nd6 {+0.19/13 21} 31. f4 {+0.55/13 33
} 31... Bf6 {+0.16/14 45} 32. Nf3 {+0.63/13 34} 32... Be6 {+0.11/13 31} 33. Rc1
{+0.79/12 34} 33... Ne4 {-0.13/14 41} 34. Ne5 {+1.05/14 34} 34... h4 {
-0.45/14 41} 35. Nf2 {+1.43/14 34} 35... Nxf2 {-1.02/15 23} 36. Kxf2 {
+1.80/15 34} 36... hxg3+ {-1.41/15 46} 37. hxg3 {+1.88/16 34} 37... Bxe5 {
-1.18/15 27} 38. fxe5 {+2.51/15 34} 38... c4 {-1.47/14 42} 39. Ke3 {+2.02/13 34
} 39... Kg7 {-1.73/14 58} 40. Rc3 {+2.07/13 34} 40... Kg6 {-1.79/13 35} 41. Ra3
{+2.46/13 30} 41... Kf5 {-2.25/13 32} 42. Kd4 {+2.65/13 30} 42... c3 {
-2.44/13 23} 43. Rxc3 {+2.75/13 30} 43... Bxa2 {-2.22/13 24} 44. Rf3+ {
+2.75/13 30} 44... Kg4 {-2.50/14 27} 45. Ra3 {+2.87/14 30} 45... Be6 {
-2.52/14 39} 46. Rxa7 {+3.08/13 30} 46... Kxg3 {-2.56/13 19} 47. Rxe7 {
+3.06/14 30} 47... Kg4 {-2.61/14 24} 48. Rxe6 {+M12/2} 48... fxe6 {0.00/3} 49.
Ke4 {0.00/35} 49... Kh4 {0.00/3} 50. Kf3 {0.00/35} 50... Kh3 {0.00/3} 51. Ke4 {
0.00/35} 51... Kg3 {0.00/3} 52. Kd3 {0.00/35} 52... Kf3 {0.00/3} 53. Kd4 {
0.00/35} 53... Kg3 {0.00/3} 54. Ke4 {0.00/35} 54... Kh3 {0.00/3} 55. Kf3 {
0.00/35} 55... Kh4 {0.00/3} 56. Ke4 {0.00/35} 56... Kg4 {0.00/3} 57. Kd3 {
0.00/35} 57... Kf4 {0.00/3} 58. Kc2 {0.00/35} 58... Kxe5 {+M19/3} 59. Kd3 {
-M18/35} 59... Kf4 {+M18/3} 60. Ke2 {-M17/35} 60... Ke4 {+M17/3} 61. Kf2 {
-M16/35} 61... Kd3 {+M16/3} 62. Ke1 {-M15/35} 62... e5 {+M15/3} 63. Kd1 {
-M14/35} 63... e4 {+M14/3} 64. Ke1 {-M13/35} 64... Ke3 {+M13/3} 65. Kd1 {
-M12/35} 65... Kf2 {+M12/3} 66. Kc2 {-M11/35} 66... e3 {+M11/3} 67. Kb3 {
-M10/35} 67... e2 {+M10/3} 68. Kc4 {-M9/35} 68... e1=Q {+M9/3} 69. Kd5 {-M8/35}
69... Qd1+ {+M8/3} 70. Kc6 {-M7/35} 70... Qd8 {+M7/3} 71. Kb7 {-M6/35} 71...
Ke3 {+M6/3} 72. Kc6 {-M5/35} 72... Kd4 {+M5/3} 73. Kb5 {-M4/35} 73... Qd6 {
+M4/3} 74. Ka4 {-M3/35} 74... Qb6 {+M3/3} 75. Ka3 Kc3 {+M2/2} 76. Ka4 {-M1/35}
76... Qa6# {+M1/1 Mat} 0-1
Olivier
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