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Subject: Why did Fritz 8 play wrongly?

Author: Eduard Nemeth

Date: 05:12:27 07/02/03



First the full game in PGN:

[Event "FSGMB June Budapest HUN "]
[Site "?"]
[Date "2003.??.??"]
[Round "10"]
[White "Koczo,K"]
[Black "Trajber,C"]
[WhiteElo "2085"]
[BlackElo "2060"]
[ECO "D18"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6
7. Bxc4 Bb4 8. O-O Nbd7 9. Nh4 Bg6 10. Qb3 a5 11. g3 Rb8
12. Rd1 Bh5 13. Be2 Bxe2 14. Nxe2 Ne4 15. f3 Nef6 16. e4
Qb6 17. Kg2 h6 18. Kf1 g5 19. Ng2 g4 20. Bf4 Rd8 21. Qe3
Bf8 22. Nh4 c5 23. Nc3 cxd4 24. Qxd4 Qxd4 25. Rxd4 e5
26. Nb5 Be7 27. Nc7+ Kf8 28. Rxd7 Nxd7 29. Bd2 Bxh4
30. gxh4 b6 31. b4 axb4 32. Bxb4+ Kg7 33. fxg4 Rc8 34. Bd6
f6 35. Ke2 Kf7 36. Rf1 Rhg8 37. h3 h5 38. g5 Kg6 39. Nd5
Rc4 40. Ne7+ Kf7 41. Nxg8 Rxe4+ 42. Kf3 Rf4+ 43. Kg2 Rxf1
44. Kxf1 Kxg8 45. gxf6 Kf7 46. Ke2 Kxf6 47. Ke3 Ke6 48. Bc7
Kd5 49. Bd8 Nc5 50. Bxb6 Nxa4 51. Bd8 Nc5 52. Bg5 Ne6
53. Bh6 Nd4 54. Bg5 Nf5+ 55. Kd3 Ke6 56. Ke4 Nd6+ 57. Ke3
Kf5 58. Kf3 Nf7 59. Be3 e4+ 60. Kf2 Ne5 61. Ke2 Nd3 62. Kd2
Nf4 63. Bxf4 Kxf4 64. Ke2 e3 65. Ke1 Ke5 66. Ke2 Ke4
67. Ke1 Kf3 68. Kf1 Kg3 69. Ke2 Kxh4 70. Kxe3 Kxh3 71. Kf4
h4 72. Kf3 Kh2 73. Kf2 h3 74. Kf1 1/2-1/2

Koczo,K - Trajber,C

[D]8/8/8/5k1p/4pn1P/4B2P/3K4/8 w - - 0 1

After move 62:

Analysis by Fritz 7.008:

63.Lg1 Sxh3 64.Lb6 Sf4 65.Ld8 Sd5 66.Lg5 Kg4 67.Ke2 Kg3 68.Ld8 Kf4 69.Lg5+ Ke5
  -+  (-1.59)   Tiefe: 21/37   00:01:57  31091kN, tb=8387
63.Lg1 Sxh3 64.Lb6 Sf4 65.Ld8 Sd5 66.Lg5 Kg4 67.Ke2 Kg3 68.Ld8 Kf4 69.Lg5+ Ke5
70.Lh6
  -+  (-1.62)   Tiefe: 22/38   00:03:02  50598kN, tb=14119

:(

After Bxf4, game is easy draw!

White moves now Bxf4:

Koczo,K - Trajber,C

[D]8/8/8/5k1p/4pB1P/7P/3K4/8 b - - 0 1


Analysis by Fritz 7:

63...Kxf4 64.Ke2 e3 65.Ke1 Ke5 66.Kf1 Kf5 67.Ke1 Kf4 68.Ke2 Ke4
  -+  (-2.31)   Tiefe: 36/49   00:00:26  6533kN, tb=1273
63...Kxf4--
  -+  (-2.03)   Tiefe: 37/51   00:00:38  9984kN, tb=1354
63...Kxf4 64.Ke2 e3 65.Ke1 Ke5 66.Kf1 Kf5 67.Ke1 Kf4 68.Ke2 Ke4
  =  (0.00)   Tiefe: 37/51   00:00:53  16440kN, tb=6048

:-((

Now Fritz 8.005:

Koczo,K - Trajber,C

[D]8/8/8/5k1p/4pn1P/4B2P/3K4/8 w - - 0 1

Analysis by Fritz 8:

63.La7 Sxh3 64.Ke3 Sf4 65.Kf2 Sd5 66.Kg3 Ke5 67.Lc5 Sf4 68.La7 Sd3 69.Le3 Ke6
70.Kg2
  -+  (-1.69)   Tiefe: 20/33   00:01:11  21670kN, tb=8952
63.La7 Sxh3 64.Ke3 Sf4 65.Kf2 Sd5 66.Kg3 Ke5 67.Lc5 Sf4 68.La7 Sd3
  -+  (-1.69)   Tiefe: 21/35   00:02:46  53622kN, tb=16505

:-(

After next move:

Koczo,K - Trajber,C

[D]8/8/8/5k1p/4pB1P/7P/3K4/8 b - - 0 1

Analysis by Fritz 8.005:

63...Kxf4 64.Ke2 e3 65.Ke1 Kf5 66.Kd1 Ke5 67.Ke2 Ke4
  -+  (-2.31)   Tiefe: 39/47   00:01:07  24068kN, tb=30253
63...Kxf4 64.Ke2 e3 65.Ke1 Kf5 66.Kd1 Ke5 67.Ke2 Ke4
  -+  (-2.31)   Tiefe: 40/50   00:02:41  58412kN, tb=53513

:-((

Next move:

Koczo,K - Trajber,C

[D]8/8/8/7p/4pk1P/7P/3K4/8 w - - 0 1


Analysis by Fritz 8.005:

64.Ke2 e3 65.Ke1 Ke5 66.Kf1 Kf5 67.Ke2 Ke4
  -+  (-2.59)   Tiefe: 37/44   00:00:43  13915kN, tb=35390
64.Ke2 e3 65.Ke1 Ke5 66.Kf1 Kf5 67.Ke2 Ke4
  -+  (-2.59)   Tiefe: 38/46   00:01:13  25370kN, tb=52622

:-(((


next move:


Koczo,K - Trajber,C

[D]8/8/8/7p/4pk1P/7P/4K3/8 b - - 0 1


Analysis by Fritz 8.005:

64...Ke5 65.Ke3 Kf5 66.Ke2 Ke6 67.Ke1 Kf5
  -+  (-1.63)   Tiefe: 28/37   00:00:14  3622kN, tb=2909
64...Ke5 65.Ke3 Kf5 66.Ke2 Ke6 67.Ke1 Kf5
  -+  (-1.63)   Tiefe: 29/39   00:00:28  7590kN, tb=3421

:-((((


For Ruffian and Yace the position is a easy:

Koczo,K - Trajber,C
8/8/8/7p/4pk1P/7P/4K3/8 b - - 0 1

Analysis by Yace Paderborn:

64...e3 65.Ke1 Ke4 66.Ke2 Kd4 67.Ke1 Ke5 68.Ke2 Ke4 69.Ke1 Kf5 70.Ke2 Ke4 71.Ke1
Kf5 72.Ke2 Ke4
  µ  (-1.35)   Tiefe: 13/14   00:00:01  9kN
64...e3 65.Ke1 Ke4 66.Ke2 Kd4 67.Ke1 Ke5 68.Ke2 Ke4 69.Ke1 Kd5 70.Ke2 Ke4
  =  (0.00)   Tiefe: 14/14   00:00:01  9kN
64...e3 65.Ke1 Ke4 66.Ke2 Kd4 67.Ke1 Ke5 68.Ke2 Ke4 69.Ke1 Kd5 70.Ke2 Ke4 71.Ke1
Kd5 72.Ke2 Ke4
  =  (0.00)   Tiefe: 14/14   00:00:01  10kN

Koczo,K - Trajber,C
8/8/8/7p/4pk1P/7P/4K3/8 b - - 0 1

Analysis by Ruffian 1.0.1:

64...e3 65.Ke1 Ke5 66.Kf1 Kf5 67.Ke1 Kf4 68.Ke2 Ke4 69.Ke1 Kd3 70.Kd1 Kc4 71.Ke2
Kd4 72.Ke1 Kd5 73.Ke2 Ke4
  -+  (-1.54)   Tiefe: 19/22   00:00:00  62kN
64...e3 65.Ke1 Ke5 66.Kf1 Kf5 67.Ke1 Kf4 68.Ke2 Ke4 69.Ke1 Kd3 70.Kd1 Kc4 71.Ke2
Kd4 72.Ke1 Kd5 73.Ke2 Ke4
  =  (0.00)   Tiefe: 20/22   00:00:00  68kN
64...Kf5 65.Ke3 Ke5 66.Ke2 Kd4 67.Kd2 Kc4 68.Ke2 Kc5 69.Ke3 Kd5 70.Ke2 Ke5
71.Kf2 Kf6 72.Ke2 Kg6 73.Kf2 Kh6 74.Ke3
  µ  (-1.04)   Tiefe: 20/24   00:00:01  104kN
64...Kf5
  ³  (-0.69)   Tiefe: 21/24   00:00:01  115kN
64...Kf5 65.Ke3 Ke5 66.Ke2 Kd4 67.Kd2 Kc4 68.Ke2 Kc5 69.Ke3 Kd5 70.Ke2 Ke5
71.Kf1 Ke6 72.Kf2 Kf6 73.Kg2 Kf5 74.Kg3
  =  (0.00)   Tiefe: 21/24   00:00:01  135kN

Why did Fritz 8 play wrongly????

My little World to kill the progams :-))

http://www.beepworld.de/members37/computerschach/

Eduard



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