AMD Barton 3200+. Engines using 256 MBs ram for hash (and 16MBs ram for pawn/EGTB hash if needed) where possible or max if less than 256MB. Own opening books except Gothmog using an Arenabook I created. 20 mins + 5 sec under Arena GUI.
Gothmog 0.4.7 - 7  - Abrok 5.0 2.0 - 2.0
Gothmog 0.4.7 - 7  - Amyan 1.592 1.5 - 2.5
Gothmog 0.4.7 - 7  - AnMon 5.30  1.0 - 3.0
Gothmog 0.4.7 - 7  - Comet B.67  3.5 - 0.5
Gothmog 0.4.7 - 7  - Delfi 4.4 2.5 - 1.5
Gothmog 0.4.7 - 7  - Francesca MAD 0.0.9 2.5 - 1.5
Gothmog 0.4.7 - 7  - Gandalf 432h  2.5 - 1.5
Gothmog 0.4.7 - 7  - Green Light Chess 3.00  3.0 - 1.0
Gothmog 0.4.7 - 7  - Leila 0.53h 1.5 - 2.5
Gothmog 0.4.7 - 7  - Quark 2.05  0.5 - 3.5
Gothmog 0.4.7 - 7  - SmarThink 0.17a 1.5 - 2.5
Gothmog 0.4.7 - 7  - Yace Paderborn  1.5 - 2.5
23.5/48 against stronger opposition than when I ran a similar gauntlet with selectivity set to 4.
This setting achieved an ELO rating 11 points greater than when set to 4, but this is not statistically significant. More games are being run at both settings and will post as results become available.
Here are two games from this gauntlet. The first against AnMon 5.30 is interesting because Gothmog's opening book did not include the sac Nxg5 (played twice by Topalov against Leko within a short space of time - both times losing). Gothmog appears to improve on Topalov's play
. I was watching this game and thought that Gothmog might actually have won the game though it eventually ended in an exciting draw.The second is against SmarThink 0.17 and is impressive simply because of the way SmarThink's position rapidly falls apart and also because it is somewhat typical of the ultra-aggressive Gothmog style; witness the rapid h-pawn push leading to an overwheling attack on white. A joy to watch indeed.
[White "Gothmog 0.4.7 - 7"]
[Black "AnMon 5.30"]
[Result "1/2-1/2"]
[ECO "C65"]
[TimeControl "1200+5"]
[PlyCount "229"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. c3 O-O 6. d4 Bb6 7. Bg5 d6 8.
Qd3 h6 9. Bh4 Bd7 10. Nbd2 a6 11. Bc4 exd4 12. cxd4 g5 13. Nxg5 hxg5 14.
Bxg5 Kg7 15. e5 dxe5 16. Ne4 Bf5 17. Rae1 Nxd4 18. Qg3 Bxe4 19. Bxf6+ Kxf6
20. Rxe4 Qd6 21. Qh4+ Kf5 22. Rfe1 Nc6 23. Qh5+ Kf6 24. Rd1 Qxd1+ 25. Qxd1
Ke7 26. Qe2 Rad8 27. Rxe5+ Nxe5 28. Qxe5+ Kd7 29. Qf5+ Kd6 30. Bxf7 c6 31.
Qf6+ Kc7 32. Qf4+ Rd6 33. h3 Bd4 34. b3 b5 35. g4 c5 36. h4 c4 37. bxc4
bxc4 38. g5 c3 39. Qf5 Rc6 40. Qf4+ Rd6 41. h5 c2 42. Kg2 a5 43. Qc1 Rxf7
44. Qxc2+ Rc6 45. Qe4 Rxf2+ 46. Kh3 Rc3+ 47. Kg4 Rc4 48. h6 Rxa2 49. g6
Rac2 50. Qe7+ Kc8 51. Qe6+ Kb7 52. Qd7+ Ka6 53. Kf5 Rf2+ 54. Ke6 Re2+ 55.
Kf7 Rec2 56. Qd6+ Bb6 57. g7 Rf2+ 58. Kg8 Rc8+ 59. Kh7 Rg2 60. Qd3+ Ka7 61.
Qh3 Rcc2 62. Qf3 Rg1 63. g8=Q Rc7+ 64. Qgf7 Rxf7+ 65. Qxf7+ Kb8 66. Qd7 Bc7
67. Qd4 Rg5 68. Qb2+ Kc8 69. Qf6 Bd8 70. Qe6+ Kb8 71. Kh8 Kc7 72. Qc4+ Kb7
73. Qe4+ Kb8 74. Qe8 Kc8 75. Qc6+ Kb8 76. Qc3 Kb7 77. Qd4 Kc7 78. Qf4+ Kc6
79. Qc1+ Kb7 80. Qc4 Bf6+ 81. Kh7 Bd8 82. Qf7+ Kb8 83. Kh8 Bc7 84. Qf8+ Kb7
85. Qf3+ Kc8 86. Qh3+ Kb7 87. Qh1+ Kc8 88. Qc6 Kb8 89. Qe8+ Kb7 90. Qe4+
Kc8 91. Kh7 Rg3 92. Qa8+ Kd7 93. Qd5+ Kc8 94. Qb5 Rg1 95. Kh8 Rg3 96. Qd5
Kb8 97. Qd7 Be5+ 98. Kh7 Bc7 99. Qc6 Rg1 100. Qc5 Rg3 101. Kh8 Kb7 102. Qe7
Kc8 103. Qe2 Kb8 104. Qe4 Rg5 105. Qe3 Rg3 106. Qe8+ Kb7 107. Qe6 Rg5 108.
Qb3+ Kc8 109. Qf3 Be5+ 110. Kh7 Bc7 111. Qd3 Kb7 112. Qe4+ Kc8 113. Qc6 Rg3
114. Kh8 Kd8 115. Qe6 1/2-1/2
[White "SmarThink 0.17a"]
[Black "Gothmog 0.4.7 - 7"]
[Result "0-1"]
[ECO "B24"]
[TimeControl "1200+5"]
[PlyCount "44"]
1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nh3 d6 6. Nf4 h5 7. d3 h4 8.
Nfd5 Nf6 9. O-O hxg3 10. fxg3 Ng4 11. Nb5 Nxh2 12. Nbc7+ Kf8 13. Nxa8 Bg4
14. Nac7 Qxc7 15. Qe1 Qd7 16. Qf2 Ne5 17. Qf4 Bf3 18. Rxf3 g5 19. Qf5
Nexf3+ 20. Bxf3 e6 21. Qg4 Nxg4 22. Bxg4 f5 0-1