Author: Mark Young
Date: 10:16:59 04/09/00
Go up one level in this thread
On April 09, 2000 at 03:14:41, blass uri wrote:
>On April 08, 2000 at 11:19:01, Tony Hedlund wrote:
>>[Event "120'/40+60'/20+60'20"]
>>[Site "SSDF"]
>>[Date "2000.04.08"]
>>[Round "34"]
>>[White "Junior 6 AMD K6-2 450"]
>>[Black "Fritz 6 AMD K6-2 450"]
>>[Result "1/2-1/2"]
>>[ECO "E12"]
>>[WhiteElo "2706"]
>>[Annotator "Tony Hedlund"]
>>[PlyCount "160"]
>>[EventDate "2000.03.25"]
>>
>>{96MB, general.ctg. AMD K6-2 450
>>} 1. d4 {0} 1... Nf6 {0} 2. c4 {0} 2... e6 {0
>>} 3. Nf3 {0} 3... b6 {0} 4. a3 {0} 4... Bb7 {0} 5. Nc3 {0} 5... d5 {0} 6. Bg5 {
>>0} 6... Be7 {0} 7. e3 {0} 7... O-O {0} 8. Rc1 {0} 8... dxc4 {0} 9. Bxc4 {0}
>>9... Nbd7 {0} 10. O-O {0} 10... c5 {0} 11. Qe2 {0} 11... Ne4 {0} 12. Nxe4 {0}
>>12... Bxe4 {0} 13. Bxe7 {0} 13... Qxe7 {0} 14. dxc5 {329} 14... bxc5 {
>>last book move 0.22/14 67} 15. b3 {240} 15... Rfd8 {0.19/14 223} 16. Rfd1 {2}
>>16... Rab8 {0.00/14 454} 17. Nd2 {2} 17... Bg6 {0.06/13 185} 18. Nf1 {57} 18...
>>Ne5 {0.09/14 414} 19. f4 {240} 19... Nc6 {0.09/14 0} 20. Qb2 {516} 20... Na5 {
>>0.12/15 1} 21. Qc3 {309} 21... Rxd1 {0.00/15 44} 22. Rxd1 {118} 22... Nxc4 {
>>0.00/15 367} 23. Qxc4 {3} 23... h6 {0.00/14 247} 24. Ng3 {2} 24... Rd8 {
>>0.00/14 429} 25. Rxd8+ {3} 25... Qxd8 {0.00/16 102} 26. h3 {912} 26... Qa5 {
>>-0.03/15 275} 27. Qc1 {313} 27... Qb6 {-0.03/16 157} 28. Qc3 {363} 28... a6 {
>>-0.09/15 268} 29. Kf2 {225} 29... Qc7 {-0.03/16 808} 30. Qc4 {238} 30... Qd6 {
>>-0.03/16 359} 31. Ke2 {3} 31... h5 {-0.09/14 212} 32. Ne4 {401} 32... Qc6 {
>>-0.41/17 0} 33. Nf2 {447} 33... Qxg2 {-0.31/17 1} 34. Qxa6 {545} 34... Be4 {
>>-0.34/16 0} 35. Ke1 {654} 35... Qg1+ {-0.28/16 0} 36. Qf1 {283} 36... Qg3 {
>>-0.28/16 0} 37. Kd2 {385} 37... Bd5 {-0.31/15 0} 38. b4 {150} 38... Bg2 {
>>-0.44/13 134} 39. Qe2 {233} 39... cxb4 {-0.50/14 73} 40. axb4 {122} 40... Bxh3
>>{-0.47/14 286} 41. Nxh3 {252} 41... Qxh3 {-0.63/15 0} 42. b5 {460} 42... h4 {
>>-0.75/15 358} 43. b6 {3} 43... Qf5 {-0.81/15 278} 44. Qa6 {134} 44... Qd5+ {
>>-0.81/15 640} 45. Ke2 {5} 45... h3 {-0.81/15 353} 46. b7 {4} 46... Qg2+ {
>>-0.78/15 199} 47. Ke1 {5} 47... h2 {-0.84/15 170} 48. b8=Q+ {3} 48... Kh7 {
>>-0.81/12 0} 49. Qd3+ {236} 49... g6 {-0.88/16 0} 50. Qf1 {104} 50... Qxf1+ {
>>-0.91/14 1} 51. Kxf1 {50} 51... h1=Q+ {-0.91/12 14} 52. Kf2 {353} 52... Qh4+ {
>>-0.91/14 1} 53. Kf3 {455} 53... Qh5+ {-0.97/14 330} 54. Kg3 {568} 54... g5 {
>>-1.09/15 940} 55. fxg5 {17} 55... Qxg5+ {-1.09/15 930} 56. Kf2 {18} 56... e5 {
>>-1.13/14 192} 57. Qf8 {433} 57... Qf6+ {-1.22/15 204} 58. Ke2 {299} 58... e4 {
>>-1.28/16 184} 59. Qc5 {175} 59... Kg6 {-1.38/15 179} 60. Kd2 {7} 60... Qf2+ {
>>-1.31/14 157} 61. Kc3 {152} 61... f5 {-1.41/15 1} 62. Kd4 {249} 62... Qb2+ {
>>-1.75/15 251} 63. Kd5 {9} 63... Kg5 {-1.72/14 187} 64. Qc6 {102} 64... Qa2+ {
>>-1.78/14 72} 65. Ke5 {371} 65... Qa5+ {-1.81/15 121} 66. Ke6 {277} 66... Kg4 {
>>-1.88/15 231} 67. Qd6 {10} 67... Qa2+ {-4.19/15 380} 68. Kf6 {11} 68... Qf2 {
>>-4.06/14 164} 69. Qc5 {8} 69... f4 {-4.13/13 91} 70. Qg5+ {287} 70... Kf3 {
>>-4.63/15 1}
>
>Can you explain this move?
>
>After this move all my engines see that it is clearly a draw.
>I think that 70...Kh3 is a better move(I am not sure about it because I do not
>have the KQP vs KQ nalimov tablebases but the evaluation of Fritz is clearly
>wrong).
>Can you explain Fritz6a's blunder in this position:
>Is it a problem with the autoplayer or with the tablebases or with learning?
>
>[D]8/8/5K2/6Q1/4ppk1/4P3/5q2/8 b - - 0 1
>
>Uri
I can explain this I think, it is a problem with Fritz 6a's probe depth of the
tablebase. The default is set to 3, and below in the first analysis will find
Fritz 6a can not see that Kf3 is a draw in a short time. Below that is the
analysis of Fritz 6a with the probe depth of the tablebases set to 0. ( the
lower the number the more fritz 6a probes the tablebases (more TB hits)) When
set to a lower setting or more tablebase probes, Fritz 6a see very quickly that
Kf3 is a draw and Kh3 is winning.
New position
8/8/5K2/6Q1/4ppk1/4P3/5q2/8 b - - 0 1
Analysis by Fritz 6: Tablebase depth set to 3(default)
1...Kg4-f3
³ (-0.69) Depth: 1/3 00:00:00
1...Kg4-f3 2.Qg5xf4+ Kf3-e2
= (-0.19) Depth: 1/5 00:00:00
1...Kg4-f3 2.Qg5xf4+ Kf3-e2
= (-0.19) Depth: 2/7 00:00:00
1...Kg4-h3
³ (-0.44) Depth: 2/7 00:00:00
1...Kg4-h3 2.e3xf4 e4-e3
³ (-0.44) Depth: 3/7 00:00:00
1...Kg4-h3!
µ (-0.75) Depth: 4/6 00:00:00
1...Kg4-h3 2.e3xf4 e4-e3 3.Kf6-f5
µ (-0.88) Depth: 4/7 00:00:00
1...Kg4-h3 2.e3xf4 e4-e3 3.Kf6-f5 Qf2-c2+ 4.Kf5-e6
µ (-0.88) Depth: 5/9 00:00:00, tb=1
1...Kg4-h3 2.e3xf4 e4-e3 3.Kf6-f5 Qf2-c2+ 4.Kf5-e6 e3-e2
µ (-0.88) Depth: 6/13 00:00:00, tb=2
1...Kg4-h3 2.Qg5-f5+ Kh3-g2 3.e3xf4 e4-e3 4.Qf5-g4+
³ (-0.69) Depth: 7/15 00:00:00 6kN, tb=8
1...Kg4-h3 2.Qg5-f5+ Kh3-g2 3.e3xf4 Kg2-f3 4.Qf5-g5 e4-e3
µ (-0.91) Depth: 8/20 00:00:00 46kN, tb=33
1...Kg4-h3 2.Qg5-f5+ Kh3-g2 3.e3xf4 Kg2-f3 4.Qf5-g5 e4-e3
µ (-0.91) Depth: 9/22 00:00:00 189kN, tb=136
1...Kg4-h3 2.Qg5-f5+ Kh3-g2 3.e3xf4 Kg2-f3 4.Qf5-g5 e4-e3
µ (-0.91) Depth: 10/25 00:00:01 510kN, tb=429
1...Kg4-f3
µ (-0.94) Depth: 10/25 00:00:02 654kN, tb=577
1...Kg4-f3 2.e3xf4 e4-e3 3.Kf6-f5 Qf2-c2+ 4.Kf5-f6 Qc2-c6+ 5.Kf6-f7 e3-e2
6.Qg5-h5+
-+ (-2.66) Depth: 10/25 00:00:04 1535kN, tb=890
1...Kg4-f3!
-+ (-2.97) Depth: 11/27 00:00:06 2273kN, tb=1529
1...Kg4-f3! 2.Qg5-h5+ Kf3xe3 3.Qh5-c5+ Ke3-f3 4.Qc5-h5+ Kf3-g2 5.Qh5-g4+ Qf2-g3
6.Qg4-e2+
-+ (-4.13) Depth: 11/27 00:00:14 4839kN, tb=2776
1...Kg4-f3 2.Qg5-h5+ Kf3xe3 3.Qh5-c5+ Ke3-f3 4.Qc5-h5+ Kf3-g2 5.Qh5-g4+ Qf2-g3
6.Qg4-e2+
-+ (-4.19) Depth: 12/28 00:00:17 6124kN, tb=4307
1...Kg4-f3 2.Qg5-h5+ Kf3xe3 3.Qh5-c5+ Ke3-f3 4.Qc5-h5+ Kf3-g2 5.Qh5-g4+ Qf2-g3
6.Qg4-e2+
-+ (-4.38) Depth: 13/30 00:00:40 14115kN, tb=11538
1...Kg4-f3 2.Qg5-h5+ Kf3xe3 3.Qh5-c5+ Ke3-f3 4.Qc5-h5+ Kf3-g2 5.Qh5-g4+ Qf2-g3
6.Qg4-e2+
-+ (-4.44) Depth: 14/34 00:01:13 25644kN, tb=25364
1...Kg4-f3 2.Qg5-h5+ Kf3xe3 3.Qh5-c5+ Ke3-f3 4.Qc5-h5+ Kf3-g2 5.Qh5-g4+ Qf2-g3
6.Qg4-e2+
-+ (-4.69) Depth: 15/36 00:02:49 59277kN, tb=74801
1...Kg4-f3--
-+ (-4.38) Depth: 16/36 00:05:02 106030kN, tb=149103
1...Kg4-f3 2.Qg5xf4+ Kf3-e2 3.Kf6-e5 Qf2xf4+ 4.e3xf4 e4-e3 5.f4-f5 Ke2-d1
6.f5-f6
= (0.00) Depth: 16/36 00:05:07 107824kN, tb=151866
1...Kg4-h3
= (0.12) Depth: 16/37 00:05:36 118506kN, tb=171141
(Young, 09.04.2000)
New position
8/8/5K2/6Q1/4ppk1/4P3/5q2/8 b - - 0 1
Analysis by Fritz 6: Tablebase depth set to 0
1...Kg4-f3
³ (-0.56) Depth: 1/1 00:00:00
1...Kg4-f3
³ (-0.56) Depth: 1/1 00:00:00
1...Kg4-f3
³ (-0.56) Depth: 2/2 00:00:00
1...Kg4-h3
µ (-0.88) Depth: 2/3 00:00:00
1...Kg4-h3 2.e3xf4
µ (-0.88) Depth: 3/6 00:00:00
1...Kg4-h3 2.e3xf4
µ (-0.88) Depth: 4/5 00:00:00
1...Kg4-h3 2.e3xf4
µ (-0.88) Depth: 5/5 00:00:00
1...Kg4-h3 2.e3xf4
µ (-0.88) Depth: 6/6 00:00:00, tb=6
1...Kg4-h3 2.e3xf4
µ (-0.88) Depth: 7/15 00:00:00, tb=15
1...Kg4-h3 2.e3xf4
µ (-0.88) Depth: 8/19 00:00:00 3kN, tb=68
1...Kg4-h3 2.e3xf4 e4-e3 3.Qg5-f5+ Kh3-g3 4.Qf5-g5+ Kg3-f3 5.f4-f5 e3-e2
6.Qg5-h5+
µ (-0.91) Depth: 9/22 00:00:00 117kN, tb=1240
1...Kg4-h3 2.e3xf4 e4-e3 3.Kf6-e5 e3-e2 4.Qg5-f5+ Kh3-h2 5.Qf5-h5+ Kh2-g1
6.Qh5-g4+
µ (-1.16) Depth: 10/24 00:00:01 379kN, tb=4094
1...Kg4-f3
µ (-1.19) Depth: 10/24 00:00:02 505kN, tb=5624
1...Kg4-f3 2.Qg5-h5+ Kf3xe3 3.Qh5-c5+ Ke3-f3 4.Qc5-h5+ Kf3-g2 5.Qh5-g4+ Qf2-g3
6.Qg4-e2+
-+ (-4.28) Depth: 10/24 00:00:09 2460kN, tb=18974
1...Kg4-f3--
-+ (-3.97) Depth: 11/27 00:00:10 3003kN, tb=24331
1...Kg4-f3 2.Qg5xf4+ Kf3-e2 3.Kf6-e5 Qf2xf4+ 4.e3xf4 e4-e3 5.f4-f5 Ke2-d2
6.f5-f6
µ (-0.75) Depth: 11/27 00:00:11 3061kN, tb=25305
1...Kg4-h3
µ (-0.78) Depth: 11/27 00:00:12 3290kN, tb=28942
1...Kg4-h3 2.Qg5-f5+ Kh3-h2 3.e3xf4 e4-e3 4.Kf6-e5 Qf2-b2+ 5.Ke5-e6 e3-e2
6.Qf5-a5
µ (-1.28) Depth: 11/27 00:00:18 4943kN, tb=43577
1...Kg4-h3 2.Qg5-f5+ Kh3-h2 3.Qf5-h5+ Kh2-g2 4.Qh5-g5+ Kg2-f1 5.e3xf4 e4-e3
6.Qg5-h6
-+ (-1.44) Depth: 12/29 00:00:22 5911kN, tb=56274
1...Kg4-f3
-+ (-1.47) Depth: 12/29 00:00:23 6242kN, tb=61537
1...Kg4-f3--
µ (-1.16) Depth: 13/22 00:00:24 6274kN, tb=62399
1...Kg4-f3 2.Qg5xf4+ Kf3-e2 3.Kf6-e5 Qf2xf4+ 4.e3xf4 e4-e3 5.f4-f5 Ke2-d1
= (0.00) Depth: 13/26 00:00:25 6559kN, tb=67032
1...Kg4-h3
= (0.12) Depth: 13/28 00:00:27 7030kN, tb=75803
1...Kg4-h3 2.Qg5-f5+ Kh3-h2 3.Qf5-h5+ Kh2-g2 4.Qh5-g5+ Kg2-f1 5.e3xf4 e4-e3
6.Qg5-h6
-+ (-1.47) Depth: 13/31 00:00:35 9051kN, tb=99962
1...Kg4-h3!
-+ (-1.78) Depth: 14/33 00:01:12 16737kN, tb=207690
1...Kg4-h3! 2.Qg5-f5+ Kh3-g2 3.Qf5xe4+ f4-f3 4.Kf6-e5 Qf2-g3+ 5.Ke5-f6 Qg3-d6+
6.Kf6-g5
-+ (-2.56) Depth: 14/33 00:01:28 20979kN, tb=261110
(Young, St. 09.04.2000)
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