Author: David Shanholtzer
Date: 10:30:46 12/05/05
Recently a posting was made to usenet computer chess group concerning a line in the C70 (Taimanov variation) Ruy Lopez. This rare line involves 9.Be3 and seems to be relatively untested, possibly with good reason. Fritz 8, Gandalf 6, Shredder 9, and Junior 9 seem to prefer 9...Bg4 as an answer. Since I've not yet had either Toga II v.1.1 or (obviously) Rybka 1.0 beta play in a tournament on this 'puter, I thought this might be a good time for a quick trial. Untested engines (here) trying an untested line. Additionally, since "Slightly Tactical" as a setting has not been tested by Vasik Rajlich, (the author of this new engine) according to the ReadMe in the zip file, I thought this might be a good try with that setting since 9.Be3 seems to me to be somewhat more tactical in nature than positional. (I should probably have tried "Slightly Positional" instead, but that will be for later, along with the other settings, and for sometime in the future.) Interestingly for me, both Rybka and Toga seemed to prefer 9...Bb7 instead of 9...Bg4, although in the last game Rybka opted for 9...Ne7!?. Anyway, here are the games FWIW: Time control as indicated below was 5 minutes + 1 second increments for each. Each engine had 192 Megs RAM to play with on an 866 MHz Intel CPU (Dell computer). Single processor. [Event "C70 9.Be2 test 1, Blitz:5'+1""] [Site "5683901"] [Date "2005.12.05"] [Round "1"] [White "Toga II 1.1"] [Black "Rybka 1.0 Beta 32-bit"] [Result "0-1"] [ECO "C70"] [PlyCount "136"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O b5 6. Bb3 Na5 7. d4 Nxb3 8. axb3 f6 9. Be3 Bb7 10. Nc3 Ne7 11. dxe5 dxe5 12. Qe2 Nc6 13. Rfd1 Bd6 14. Bc5 O-O 15. b4 Qd7 16. Nd5 Rad8 17. c4 bxc4 18. Qxc4 Qf7 19. b3 Kh8 20. Bxd6 Rxd6 21. b5 axb5 22. Qxb5 Rb8 23. Rdc1 Bc8 24. Qc5 Be6 25. Ra6 Nd4 26. Qxc7 Qxc7 27. Nxc7 Rxa6 28. Nxa6 Nxb3 29. Nxb8 Nxc1 30. Nd2 Kg8 31. Na6 Kf8 32. Nc7 Bf7 33. Nb1 Nd3 34. Nc3 Nb4 35. Kf1 Bc4+ 36. Ke1 Ke7 37. N7b5 Kd7 38. Na3 Bb3 39. Nd1 Be6 40. Ne3 Kd6 41. Nb5+ Kc5 42. Nc3 g6 43. Kd2 h5 44. g3 Kd4 45. h4 Bg4 46. Ned5 Nxd5 47. Nxd5 f5 48. Ne7 f4 49. gxf4 exf4 50. Nxg6 Kxe4 51. Ne7 Be6 52. Nc6 Bc8 53. Ne7 Bb7 54. Ke2 Ba6+ 55. Ke1 Kf3 56. Ng6 Kg4 57. Kd2 Bb5 58. Nf8 Kxh4 59. Ng6+ Kg5 60. Ne5 h4 61. Nf3+ Kg4 62. Nh2+ Kh3 63. Nf3 Bc6 64. Nd4 Kg2 65. Ne6 Kf3 66. Ke1 h3 67. Nd4+ Kg2 68. Nxc6 h2 0-1 [Event "C70 9.Be2 test 1, Blitz:5'+1""] [Site "5683901"] [Date "2005.12.05"] [Round "2"] [White "Rybka 1.0 Beta 32-bit"] [Black "Toga II 1.1"] [Result "1-0"] [ECO "C70"] [PlyCount "101"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O b5 6. Bb3 Na5 7. d4 Nxb3 8. axb3 f6 9. Be3 Bb7 10. Nc3 b4 11. Nd5 Ne7 12. c4 Nxd5 13. cxd5 c6 14. dxe5 cxd5 15. e6 dxe4 16. Nd4 d5 17. Qg4 g6 18. Rfc1 Rc8 19. Nf5 Rg8 20. h3 h5 21. Qg3 g5 22. Bd4 Rg6 23. Qe3 g4 24. Qg3 Rg5 25. hxg4 a5 26. Rxc8 Bxc8 27. Qb8 Bxe6 28. Qxd8+ Kxd8 29. Bxf6+ Kd7 30. Bxg5 hxg4 31. Nd4 Bc5 32. Be3 Bxd4 33. Bxd4 g3 34. fxg3 Bg4 35. Rxa5 Kd6 36. Bc5+ Ke6 37. Bxb4 d4 38. Ra7 Kd5 39. Ra6 Bd1 40. Ra5+ Ke6 41. Ra3 Kd5 42. Bf8 e3 43. Ra5+ Ke6 44. b4 Bb3 45. Bc5 e2 46. Kf2 d3 47. Be3 Bd5 48. b5 Bxg2 49. Ra7 e1=R 50. Kxe1 Kf6 51. b6 1-0 [Event "C70 9.Be2 test 1, Blitz:5'+1""] [Site "5683901"] [Date "2005.12.05"] [Round "3"] [White "Toga II 1.1"] [Black "Rybka 1.0 Beta 32-bit"] [Result "1/2-1/2"] [ECO "C70"] [PlyCount "78"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O b5 6. Bb3 Na5 7. d4 Nxb3 8. axb3 f6 9. Be3 Bb7 10. Nc3 Ne7 11. dxe5 dxe5 12. Qe2 Nc6 13. Rfd1 Bd6 14. Bc5 O-O 15. h4 Qd7 16. h5 h6 17. Rd2 Rad8 18. Rad1 Qe7 19. Bxd6 Rxd6 20. Rxd6 cxd6 21. Nd5 Qe8 22. Ne3 Ne7 23. Rxd6 Nc8 24. Rd1 Bxe4 25. Nd2 Bc6 26. Ndf1 Qe6 27. c4 Ne7 28. Ng3 f5 29. Nc2 f4 30. Nd4 Qf7 31. Nxc6 Nxc6 32. Nf1 Re8 33. Rd6 Nd4 34. Qg4 Re6 35. Rd8+ Re8 36. Rd7 Re7 37. Rd8+ Re8 38. Rd7 Re7 39. Rd8+ Re8 1/2-1/2 [Event "C70 9.Be2 test 1, Blitz:5'+1""] [Site "5683901"] [Date "2005.12.05"] [Round "4"] [White "Rybka 1.0 Beta 32-bit"] [Black "Toga II 1.1"] [Result "0-1"] [ECO "C70"] [PlyCount "278"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O b5 6. Bb3 Na5 7. d4 Nxb3 8. axb3 f6 9. Be3 Bb7 10. Nc3 b4 11. Nd5 Ne7 12. c4 Qd7 13. dxe5 dxe5 14. Nxb4 Bxe4 15. Rxa6 Rd8 16. Qxd7+ Rxd7 17. Ra5 Kf7 18. Rfa1 Nc6 19. Nxc6 Bxc6 20. Ra6 Be4 21. Nd2 Bf5 22. Ra8 Rg8 23. Kf1 Bb4 24. Rxg8 Kxg8 25. Ke2 c5 26. g4 Bxg4+ 27. f3 Bxd2 28. fxg4 Bxe3 29. Kxe3 Rd4 30. h3 h5 31. Ra8+ Kh7 32. Ra5 hxg4 33. hxg4 Rxg4 34. Rxc5 Rg3+ 35. Ke4 g5 36. b4 Rb3 37. Kf5 Rf3+ 38. Ke4 Rf4+ 39. Kd3 g4 40. Ra5 g3 41. Ra1 f5 42. b5 Rf2 43. b3 e4+ 44. Kd4 g2 45. Rg1 f4 46. b6 f3 47. b7 Rd2+ 48. Kxe4 f2 49. Rxg2 f1=Q 50. Rxd2 Qh1+ 51. Ke5 Qxb7 52. Rd3 Qg7+ 53. Ke4 Qg1 54. Kd5 Qg5+ 55. Kd4 Qf4+ 56. Kd5 Kg6 57. c5 Kf6 58. Rd4 Qf3+ 59. Kc4 Qf1+ 60. Kb4 Ke5 61. Rd6 Qb1 62. Rd7 Qc2 63. Rd6 Kf5 64. Rd5+ Ke6 65. Rd8 Kf6 66. Rd4 Ke7 67. Rd6 Kf7 68. Rb6 Ke8 69. Rd6 Ke7 70. Rd4 Qc1 71. Rd6 Qb2 72. Kc4 Qe2+ 73. Kb4 Kf7 74. Kc3 Qe1+ 75. Kc4 Qf1+ 76. Kb4 Qf2 77. Kb5 Qe2+ 78. Ka5 Qa2+ 79. Kb4 Qb2 80. Kc4 Qc2+ 81. Kb4 Ke8 82. Rd4 Qb1 83. Kc4 Qc1+ 84. Kb4 Qb2 85. Rd6 Kf8 86. Rd7 Qe2 87. Rd6 Qa2 88. Kc3 Qa1+ 89. Kc4 Qf1+ 90. Kc3 Qc1+ 91. Kb4 Qc2 92. Rf6+ Kg7 93. Rd6 Qe2 94. Kc3 Qe3+ 95. Kc4 Kf7 96. b4 Qe2+ 97. Kd5 Ke7 98. Kd4 Qc2 99. Rb6 Qd2+ 100. Ke4 Qg2+ 101. Ke5 Qg3+ 102. Ke4 Qc3 103. Rb7+ Ke8 104. Rb6 Kd7 105. Rd6+ Kc7 106. Rd4 Kc6 107. Rd6+ Kb5 108. Rb6+ Kc4 109. Kf5 Qe3 110. Kf6 Qe4 111. Kg5 Qf3 112. Kg6 Kd5 113. Rd6+ Ke5 114. Rb6 Qf8 115. Kg5 Qg8+ 116. Rg6 Qd8+ 117. Kh6 Kf5 118. Kh7 Qe7+ 119. Rg7 Qh4+ 120. Kg8 Qxb4 121. Rf7+ Ke6 122. c6 Qb8+ 123. Kg7 Qg3+ 124. Kf8 Qh4 125. Kg8 Qd8+ 126. Rf8 Qe7 127. Rf1 Qg5+ 128. Kf8 Qh4 129. Kg7 Qg3+ 130. Kh6 Qh3+ 131. Kg5 Qxf1 132. c7 Qc1+ 133. Kg4 Qxc7 134. Kf3 Qe5 135. Kf2 Kf5 136. Kf1 Kf4 137. Kg1 Qb2 138. Kf1 Kf3 139. Ke1 Qc1# 0-1 [Event "C70 9.Be2 test 1, Blitz:5'+1""] [Site "5683901"] [Date "2005.12.05"] [Round "5"] [White "Toga II 1.1"] [Black "Rybka 1.0 Beta 32-bit"] [Result "1/2-1/2"] [ECO "C70"] [PlyCount "249"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O b5 6. Bb3 Na5 7. d4 Nxb3 8. axb3 f6 9. Be3 Bb7 10. Nc3 Ne7 11. dxe5 dxe5 12. Qe2 Nc6 13. Nh4 g6 14. Rfd1 Bd6 15. Bc5 O-O 16. Nf3 Qd7 17. h3 Rad8 18. Rd3 Qe6 19. Bxd6 Rxd6 20. Rad1 Rfd8 21. Qe3 Nb4 22. Rxd6 Rxd6 23. Rc1 Rd8 24. h4 Bc6 25. h5 gxh5 26. Qc5 Qd6 27. Qa7 Kg7 28. Nh4 Bd7 29. Rd1 Qb6 30. Qxb6 cxb6 31. Rd6 Kf7 32. Nd5 Nxd5 33. exd5 Ke7 34. Rxb6 Rc8 35. c3 Rc5 36. d6+ Ke6 37. Rxa6 Rd5 38. Kf1 Rd2 39. Ra2 Rc2 40. b4 Kxd6 41. Ra6+ Ke7 42. Ra7 Rxb2 43. Nf5+ Ke6 44. Ng3 Rc2 45. Nxh5 Rc1+ 46. Ke2 Rxc3 47. Nxf6 Bc6 48. Ng4 Rc4 49. Ne3 Rxb4 50. Rxh7 Rb2+ 51. Ke1 Be4 52. Rh6+ Ke7 53. Rh5 Kd6 54. Rh6+ Kc5 55. Re6 b4 56. Rxe5+ Kd4 57. Re6 b3 58. Rb6 Kc5 59. Rb8 Bd3 60. Rc8+ Kb5 61. Rb8+ Ka4 62. Ra8+ Kb4 63. Rb8+ Bb5 64. Nd5+ Kc4 65. Ne3+ Kc5 66. Rc8+ Kb6 67. Nd5+ Kb7 68. Rc3 Re2+ 69. Kd1 Rxf2 70. Rxb3 Kc6 71. Ne3 Ra2 72. Nc2 Ra4 73. Kd2 Bc4 74. Rb8 Bd5 75. g3 Rg4 76. Rc8+ Kd7 77. Rc3 Ke6 78. Rd3 Be4 79. Re3 Ke5 80. Na3 Rg7 81. Nc4+ Kd5 82. Rc3 Rg8 83. Nb6+ Ke6 84. Ra3 Rg6 85. Ke2 Kd6 86. Nc4+ Kc5 87. Ne5 Rg7 88. Nd3+ Kd6 89. Ra6+ Kd5 90. Nf4+ Ke5 91. Ra5+ Kd6 92. Kf2 Bc6 93. Rh5 Rf7 94. Ke3 Re7+ 95. Kd4 Re4+ 96. Kd3 Ra4 97. Ke3 Re4+ 98. Kd2 Ra4 99. Rh6+ Kc7 100. Rh7+ Kd6 101. Rh5 Bf3 102. Rh8 Be4 103. Rb8 Ke5 104. Rb5+ Kd6 105. Ke3 Ba8 106. Rh5 Re4+ 107. Kf2 Bc6 108. Rh6+ Kc5 109. Rf6 Bd7 110. Ra6 Re7 111. Ra5+ Kd4 112. Ra7 Rf7 113. Ke1 Be8 114. Ra5 Ke4 115. Ra6 Bb5 116. Rb6 Bc4 117. Rb4 Kd4 118. Kf2 Rf8 119. Rb7 Rf7 120. Rb1 Rf6 121. Rc1 Rf7 122. Ra1 Rf6 123. Ra7 Ke4 124. Kg1 Rd6 125. Rd7 1/2-1/2 [Event "C70 9.Be2 test 1, Blitz:5'+1""] [Site "5683901"] [Date "2005.12.05"] [Round "6"] [White "Rybka 1.0 Beta 32-bit"] [Black "Toga II 1.1"] [Result "1-0"] [ECO "C70"] [PlyCount "157"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O b5 6. Bb3 Na5 7. d4 Nxb3 8. axb3 f6 9. Be3 Ne7 10. dxe5 fxe5 11. Qd3 Bg4 12. Nc3 Bxf3 13. gxf3 Nc6 14. Nd5 Qd7 15. Ra3 Be7 16. Rfa1 Nb8 17. c4 bxc4 18. bxc4 Bd8 19. c5 c6 20. Nb6 Bxb6 21. cxb6 Rf8 22. b7 Qxb7 23. Qxd6 Kf7 24. Qxe5 Nd7 25. Qf5+ Kg8 26. Qe6+ Rf7 27. Rb3 Qc7 28. Rc1 Rc8 29. Rbc3 Nb8 30. f4 Qd7 31. Qxd7 Rxd7 32. Rb3 g6 33. Kg2 Re8 34. Rc4 Rd1 35. Kf3 Rc8 36. Rb7 Rdd8 37. e5 a5 38. f5 gxf5 39. e6 Re8 40. Rh4 Rxe6 41. Rbxh7 Rce8 42. Bd4 R6e7 43. Rxe7 Rxe7 44. Rh8+ Kf7 45. Rxb8 Re4 46. Bc5 Rc4 47. Ba3 Rd4 48. Rf8+ Ke6 49. Re8+ Kf6 50. Rc8 Rc4 51. Rf8+ Ke6 52. Rh8 Kf7 53. h4 Kg7 54. Rc8 Kg6 55. Ke3 a4 56. f4 Rc2 57. Rg8+ Kf7 58. Rg5 Kf6 59. h5 Rh2 60. Kd4 Ke6 61. Rg6+ Kf7 62. Ke5 Rxh5 63. Rf6+ Ke8 64. Rf8+ Kd7 65. Rf7+ Kd8 66. Be7+ Kc7 67. Bc5+ Kb8 68. Kf6 Kc8 69. Ra7 Rh2 70. Rxa4 Rxb2 71. Kxf5 Rb5 72. Rc4 Rb1 73. Kg6 Rb2 74. f5 Rg2+ 75. Kf7 Kd7 76. f6 Re2 77. Ra4 Kc7 78. Ra7+ Kc8 79. Kg8 1-0
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