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Subject: The depth of Fritz6a in Steve Ham-Fritz6a correspondence game

Author: Uri Blass

Date: 14:01:43 02/16/01


Fritz6 could get only depth 18 in the last move 71...Rg1.

See http://correspondencechess.com/campbell/ham/fr_hamwh.htm

I have not Fritz6a but it seems strange to me because my Deep Fritz can get
depth 19/45 in the same position in less than an hour(PIII450 128 Mbytes hash).

Here is a pgn file of the game

[Event "Computer CC Challenge Match 1999"]
[Site "correspondencechess.com"]
[Date "2000.??.??"]
[Round "1"]
[White "Ham, Steve"]
[Black "Fritz6"]
[Result "*"]
[ECO "E86"]
[WhiteElo "2508"]
[PlyCount "143"]
[EventDate "2000.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. Nge2 c6 8. Qd2
Nbd7 9. O-O-O a6 10. h4 b5 11. h5 Nxh5 12. g4 Nhf6 13. Bh6 b4 14. Bxg7 (14. Na4
Qe7 15. Bxg7 Kxg7 16. Qh6+ Kh8 17. Ng3 Rg8 18. g5 Nh5 19. Nxh5 gxh5 20. dxe5
Nxe5) (14. Nb1 Qe7 15. Bxg7 Kxg7 16. Qh6+ Kh8 17. Ng3 Rg8 18. g5 Nh5 19. Nxh5
gxh5 20. dxe5 Nxe5) 14... Kxg7 15. Qh6+ Kh8 {(10:40) +0.97 - 15...Kg8 +1.50}
16. Nb1 Rg8 17. g5 Nh5 18. Ng3 Qf8 {Fritz6 (+0.22) after 21:00. Depth 18/18}
19. Qxf8 Nxf8 {Frtiz6 (+0.22) after 6:30 Depth 18/40 g8-f8 2/21} 20. Nxh5 gxh5
{Fritz6 (-0.56) after 6:50 Depth 17/17 g6-h5 (1/20)} 21. dxe5 dxe5 {
Fritz6 (-0.31) after 10:00 Depth 16/39 d6-d5 (7/24)} 22. Rxh5 Ne6 {
Fritz6 (-0.19) after 17:30 Depth 17/39 c8-e6 (2/21)} 23. g6 Rxg6 {
Fritz6a -/= (-0.25) after 7:30 Depth 19/43 f7-g6 (2/25)} 24. Rxe5 Rg3 {
Fritz6a = (-0.16) after 11:35 Depth 18/42 g6-h6 (6/30)} 25. Nd2 Kg7 {
Fritz6a -/= (-0.28) after 21:00 Depth 19/19 h8-g7 (1/30)} 26. Rh5 h6 {
Fritz 6a -/= (-0.28) after 20: 45 Depth 19/19} 27. Rh2 c5 {
Fritz6a -/=(-0.28) after 18:00 Depth 18/43} 28. Be2 Nd4 {
Fritz6a-/=(-0,34) after 18:40 Depth 20/20} 29. Rdh1 Be6 {
Fritz6a=(-0.22) after 21:30 Depth 21/21} 30. Bd1 Rh8 {
Fritz6a=(-0.25) after 11:30 Depth 20/20} 31. f4 Bd7 {
Fritz6a=(-0.09) after 17:00 Depth 20/20} 32. Nf1 Rg6 {
Fritz6a=(-0.06) after 18:45 depth 20/20} 33. Bh5 Re6 {
Fritz6a=(-0.16) after 17:30 depth 18/44} 34. Nd2 Bc6 {
Fritz6a-=(-0.34) after 17:00 depth 20/47} 35. Re1 Kf8 {
Fritz6a-=(-0.28) after 19:30 depth 20/45} 36. Bd1 Ke7 {
Fritz6a=(-0.22) after 18:30 depth 21/21} 37. Rh5 f5 {
Fritz6a=(-0.13) after 17:30 depth 21/21} 38. e5 Rg8 {
Fritz6a =(-0.16) after 20:10 depth 21/47} 39. Nb3 Nxb3+ 40. axb3 Be4 {
Fritz6a=(-0.09) after 19:30 depth 24/24} 41. Bc2 Bf3 42. Rh2 Bg4 43. Kd2 h5 44.
Ke3 Rh8 45. Bd1 Rg6 46. Rg1 h4 47. Bf3 Kd8 48. Bd5 Rgh6 49. Ra1 Kc7 50. Kf2
R8h7 51. e6 Kb6 52. Rhh1 Rg7 53. Rhe1 Rhh7 54. Re3 Re7 55. Kg2 Rhg7 56. Kh2 Rg8
57. Rae1 Rgg7 58. Bg2 Rg6 59. Re5 h3 60. Bd5 {-0.02/20 303} 60... Rh6 61. Ra1
Rg6 62. Ree1 Rgg7 63. Rg1 Rg6 64. Rae1 Rh6 65. Re5 (65. Rxg4 fxg4 66. f5 Rf6
67. Re5 Kc7 68. Be4 Kd6 69. Rd5+ Kc7 70. Kg3) 65... Rf6 66. Rxg4 fxg4 67. f5
Rh6 68. Kg3 h2 69. Bh1 Re8 70. Kxg4 Rg8+ 71. Kf3 Rg1 {0} 72. e7 *





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