Author: Laurence Chen
Date: 11:59:57 04/09/00
Go up one level in this thread
On April 09, 2000 at 14:25:53, Robert Hyatt wrote:
>On April 09, 2000 at 12:18:49, Mark Young wrote:
>
>>On April 09, 2000 at 11:55:03, Laurence Chen wrote:
>>
>>>Without the 5 men tablebases, only using the 3 and 4 men tablebases, Fritz 6a
>>>plays the endgame correctly. Thus, it seems that Fritz 6a uses the 5 men
>>>tablebases incorrectly. Bummer !!!
>>
>>I have the 5 men tablebases, and it worked on my system.
>
>
>do you have _all_ or _some_? There are 7.5 gigs of compressed 5 piece
>tables available. The two of you might easily be testing with different
>ones available.
>
>
I have downloaded all the 5 men tablebases from the ftp which provides it. I'm
sure that I've got all the tablebases, the problem is that Fritz 6a does not
play the correct move from the tablebase, as you can see from the game score
given below. My other chess engines have no problem accessing the tablebases,
and Junior 6a, Hiarcs 7.32, Crafty 17.07 play the correct continuation. My
point is that there's something wrong with the way Fritz 6a access the
tablebases. B. Uri noticed this from the games which Fritz 6a played in the
SSDF, although the SSDF does not use all the 5 men tablebases. If my other
engines have no problem accessing and using the tablebases, I must conclude that
there's absolute something wrong with the way Fritz 6a accesses and uses the 5
men tablebases.
Laurence
>>
>>>Laurence
>>>On April 09, 2000 at 11:47:22, Mark Young wrote:
>>>
>>>>On April 09, 2000 at 09:47:27, Laurence Chen wrote:
>>>>
>>>>I could not reproduce the draw, Fritz 6a always won.
>>>>
>>>>>Here's a position which Fritz 6a played against Rebel-Tiger 12e, and somehow
>>>>>Fritz 6a blundered away a win to a draw. It played like a drunk in my opinion in
>>>>>this endgame. It seems to be a major bug in Fritz 6a when accessing the
>>>>>tablebases. I tested this position with other engines, Junior 6a, Hiarcs 7.32,
>>>>>Crafty 17.07, and they all played the endgame correctly. I have all the 5 men
>>>>>tablebase endgame in my hard-drive. And the engines have access to all the
>>>>>tablebases. Can someone check if this happens also in Fritz 6a?
>>>>>
>>>>>Position after move 70. Black to move.
>>>>>[d]8/8/8/2K3p1/3r2P1/4k3/2R5/8 b - - 0 70
>>>>>
>>>>>[Event "Level=Blitz:5'+3". "]
>>>>>[Site "Mississauga"]
>>>>>[Date "2000.04.08"]
>>>>>[Round "4"]
>>>>>[White "Rebel-Tiger 12e"]
>>>>>[Black "Fritz 6"]
>>>>>[Result "1/2-1/2"]
>>>>>[ECO "E19"]
>>>>>[Annotator "0.37"]
>>>>>[PlyCount "198"]
>>>>>[EventDate "2000.04.08"]
>>>>>
>>>>>{16384kB, General.ctg. Pentium III 600E
>>>>>} 1. d4 {0} 1... Nf6 {0} 2. c4 {0}
>>>>>2... e6 {0} 3. Nf3 {0} 3... b6 {0} 4. g3 {0} 4... Bb7 {0} 5. Bg2 {0} 5... Be7 {
>>>>>0} 6. O-O {0} 6... O-O {0} 7. Nc3 {0} 7... Ne4 {0} 8. Qc2 {0} 8... Nxc3 {0} 9.
>>>>>Qxc3 {1} 9... c5 {0} 10. Rd1 {0} 10... d6 {0} 11. b3 {0} 11... Bf6 {0} 12. Bb2
>>>>>{0} 12... Qe7 {0} 13. Qc2 {1} 13... Nc6 {0} 14. e4 {0} 14... g6 {0} 15. d5 {0}
>>>>>15... Nb4 {0} 16. Bxf6 {0} 16... Qxf6 {0} 17. Qd2 {0} 17... e5 {0} 18. a3 {11}
>>>>>18... Na6 {0} 19. Qh6 {last book move 25} 19... Qg7 {0.37/12 13} 20. Qxg7+ {7}
>>>>>20... Kxg7 {0.31/13 0} 21. Bh3 {10} 21... Kf6 {0.25/12 34} 22. Bd7 {10} 22...
>>>>>Nb8 {0.12/13 31} 23. Ba4 {16} 23... Ke7 {0.12/12 11} 24. Nh4 {11} 24... f5 {
>>>>>0.03/13 13} 25. f4 {6} 25... fxe4 {-0.25/12 19} 26. fxe5 {13} 26... dxe5 {
>>>>>-0.38/12 19} 27. Re1 {16} 27... Kd6 {-0.38/12 8} 28. Rxe4 {6} 28... a6 {
>>>>>-0.31/12 2} 29. Re3 {4} 29... b5 {-0.06/12 4} 30. cxb5 {7} 30... axb5 {
>>>>>-0.19/12 9} 31. Bxb5 {11} 31... Bxd5 {-0.19/12 0} 32. Rd1 {6} 32... Nc6 {
>>>>>0.06/11 1} 33. Bxc6 {8} 33... Kxc6 {0.37/12 0} 34. b4 {8} 34... e4 {0.50/11 0}
>>>>>35. Rc3 {6} 35... c4 {0.00/12 17} 36. Ng2 {16} 36... Bg8 {0.00/13 0} 37. Rd4 {7
>>>>>} 37... Rfe8 {0.00/12 7} 38. Ne3 {11} 38... Kb5 {0.00/13 0} 39. Nc2 {8} 39...
>>>>>Rad8 {0.09/12 10} 40. Kf2 {19} 40... Ka4 {0.00/15 0} 41. Ke3 {4} 41... Bd5 {
>>>>>0.00/13 3} 42. Rd2 {9} 42... Rf8 {0.00/12 10} 43. Ke2 {0} 43... Bg8 {0.00/12 12
>>>>>} 44. Nd4 {4} 44... Rde8 {0.00/11 9} 45. Ke1 {5} 45... h6 {0.03/12 27} 46. Re2
>>>>>{5} 46... Rf6 {-0.09/12 15} 47. Rce3 {5} 47... Rd8 {-0.38/12 9} 48. Rxe4 {9}
>>>>>48... Rfd6 {-0.47/11 1} 49. Ne6 {24} 49... Bxe6 {-1.22/11 3} 50. Rxe6 {17}
>>>>>50... Kxa3 {-1.66/13 0} 51. R6e3+ {16} 51... Kxb4 {-1.72/12 6} 52. Rb2+ {1}
>>>>>52... Kc5 {-1.78/12 9} 53. Ke2 {5} 53... Rd3 {-1.91/12 7} 54. Rxd3 {13} 54...
>>>>>Rxd3 {-1.81/11 3} 55. Ra2 {9} 55... Rd6 {-2.22/12 6} 56. Ke3 {9} 56... c3 {
>>>>>-2.53/12 6} 57. Ra7 {4} 57... Kc4 {-2.66/12 2} 58. Rc7+ {3} 58... Kb3 {
>>>>>-2.78/12 1} 59. Rb7+ {7} 59... Kc2 {-3.03/14 0} 60. Rc7 {16} 60... Rd3+ {
>>>>>-3.25/12 4} 61. Ke2 {1} 61... Rd2+ {-3.28/12 2} 62. Ke3 {4} 62... Rxh2 {
>>>>>-3.38/13 0} 63. Rc6 {9} 63... g5 {-3.53/13 0} 64. Kd4 {4} 64... Rd2+ {
>>>>>-4.13/12 1} 65. Kc4 {9} 65... Rd3 {-4.16/13 0} 66. g4 {14} 66... Kd2 {
>>>>>-5.66/14 0} 67. Rxh6 {9} 67... c2 {-14.44/11 5} 68. Rh2+ {2} 68... Ke3 {
>>>>>-15.66/12 0} 69. Rxc2 {3} 69... Rd4+ {-#34/6 0} 70. Kc5 {2} 70... Rxg4 {
>>>>>-#33/5 0} 71. Kd5 {3} 71... Rd4+ {-#31/4 0} 72. Ke5 {2} 72... Rb4 {-#30/5 0}
>>>>>73. Rc3+ {4} 73... Kf2 {-#29/5 0} 74. Rc2+ {2} 74... Kg3 {-#28/5 0} 75. Rc3+ {3
>>>>>} 75... Kh4 {-#27/5 0} 76. Rc6 {2} 76... Rb5+ {-#31/4 0} 77. Ke4 {4} 77... Rb3
>>>>>{-#30/5 0} 78. Kf5 {12} 78... Rf3+ {-#30/4 0} 79. Ke4 {2} 79... Rf4+ {-#30/4 0}
>>>>>80. Ke5 {7} 80... Ra4 {-#27/5 0} 81. Kf5 {4} 81... Rf4+ {-#28/4 0} 82. Ke5 {2}
>>>>>82... Rb4 {-#27/5 0} 83. Kf5 {2} 83... Rb5+ {-#31/4 0} 84. Ke4 {2} 84... g4 {
>>>>>-#30/5 0} 85. Kf4 {3} 85... Rb4+ {-#29/4 0} 86. Kf5 {2} 86... Rb5+ {-#30/4 0}
>>>>>87. Kf4 {2} 87... Kh5 {0.00/47 0} 88. Rc8 {3} 88... Rb1 {0.00/47 0} 89. Rh8+ {2
>>>>>} 89... Kg6 {0.00/47 0} 90. Kxg4 {2} 90... Kf6 {0.00/47 0} 91. Kf3 {3} 91...
>>>>>Ke5 {0.00/47 0} 92. Re8+ {2} 92... Kd4 {0.00/47 0} 93. Rd8+ {2} 93... Kc5 {
>>>>>0.00/47 0} 94. Ke4 {2} 94... Ra1 {0.00/47 0} 95. Rd7 {2} 95... Kc6 {0.00/47 0}
>>>>>96. Rh7 {4} 96... Kd6 {0.00/47 0} 97. Rh6+ {3} 97... Kc5 {0.00/47 0} 98. Rh8 {2
>>>>>} 98... Rf1 {0.00/47 0} 99. Rh7 {2} 99... Rd1 {0.00/47 0} 1/2-1/2
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