My use of the term is for weaker engines, old and new, that have not been tested for the CCRL blitz list. Besides Oliver DeVille (Chess War) and Leo Dijksman (WBEC), few people spend time testing these engines. Two years ago, Carlos Pagador did a great job creating a list called "Battle of the Forgotten" which highlighted these engines. Though many people's interest lies with the strongest engines (and I must admit, I also have interest in those engines), there are a handful of us, authors and enthusiasts, who like these unsung engines. For myself, I like watching some of these engines play because I can understand their moves :) .
All of these engines are included in the CCRL 40/4 rating list.
Conditions:
OS: Windows XP 64-bit
CPU: Intel E8400 @ 2.95 GHz,Intel QX6700 @ 3.05 GHz, and Intel Pentium IV @ 3.0 GHz
Ram: 128 MB
GUI: Arena 2.01
Time Control: 40 moves in 3 minutes (40 moves in 6 minutes for games played on the Pentium IV), repeating (conforms to 40/4 on CCRL reference computer)
Starting Positions: 17,909 positions 4 moves deep
Rating Program: Ordo 0.6 with the switch '-W', and adjusted so that Brutus RND (which is a random mover) has a rating of 0 Elo.
Statistics (as of August 23, 2012):
Total number of games = 169825 White wins = 71672 (42.20%) Draws = 33822 (19.92%) Black wins = 64331 (37.88%) White Score = 52.16% White mated = 50360 White stalemated = 611 Black mated = 56446 Black stalemated = 695 Pawn moves = 4639497 Knight moves = 2825955 Bishop moves = 3047192 Rook moves = 4669813 Queen moves = 2586551 King moves = 4101995 Check moves = 1997078 Mate moves = 106806 Stalemate moves = 1306 Hit moves = 3788233 En passant moves = 10385 Pawn two moves = 1031917 Short castlings = 230374 Long castlings = 33717 Promotion to queen = 103068 Promotion to rook = 3280 Promotion to bishop = 761 Promotion to knight = 1608 Average number of moves in a game = 127.23 (counts White and Black moves) Average number of legal moves possible for a position = 26.35
While many of the games that are used to construct this rating list were generated by me, it does include games submitted by other members of the CCRL. Information about each engine on the list is contained in this Google document
All games used to construct the Also-Rans rating list are included in the CCRL 40/4 database.
Rating List (as of June 9, 2013)
# ENGINE Elo #Games (%) 1 Latista (Sinobyl) 1.5 2200.5 2631 46.90% 2 Madeleine 0.2 2200.1 2637 48.30% 3 Alex 2.03 2198.2 644 53.20% 4 Atlas 2.20 2197.7 2797 49.30% 5 Beowulf 2.4a 32-bit 2197.2 1874 47.70% 6 Uralochka 1.1b 2194.0 1686 50.70% 7 Shallow 1.0 64-bit 2191.8 1240 48.70% 8 Feuerstein 0.4.6.1 2191.0 795 69.70% 9 Atak 6.8 2187.3 1994 48.20% 10 Firefly 2.6.0 64-bit 2187.3 1085 48.00% 11 Neurosis 2.3 2185.1 96 20.80% 12 Chesley r323 64-bit 2177.0 455 71.90% 13 Genesis 2.0 2175.6 2771 51.20% 14 InmiChess3.06N 2169.0 3723 50.30% 15 BlackBishop 1.0 2166.1 2837 47.70% 16 Kurt 0.9.2.2 64-bit 2157.4 1922 51.00% 17 Sunsetter 10.3 64-bit 2153.0 2144 51.60% 18 Lime 66 2152.7 4067 46.60% 19 NagaSkaki 5.12 2148.8 2059 45.60% 20 Alarm 0.93.1 2147.2 3107 52.60% 21 Nesik 0.7.0 alpha 2146.0 2617 49.40% 22 Fortress 1.62 2139.7 4070 50.70% 23 WJChess 1.64 2137.7 3235 49.50% 24 Adam 3.2 2129.7 1552 49.70% 25 Bearded 06-29 2128.7 1277 64.10% 26 Hussar 0.1 2124.8 1135 56.60% 27 TJchess 0.121R 2121.7 765 50.70% 28 KnockOut 0.7.1 32-bit 2117.6 1219 54.30% 29 GK 0.90 64-bit 2115.0 2313 49.00% 30 Alf 1.09 2110.6 1666 50.50% 31 Ghost 0.14 2105.4 1530 51.40% 32 Clarabit 1.00 64-bit 2104.8 1527 48.20% 33 Wing 2.0a 2101.8 3515 51.00% 34 Uragano 3D 0.87 2096.8 1896 53.60% 35 BikJump 2.01 64-bit 2091.0 2289 50.00% 36 Myrddin 0.83k 64-bit 2087.1 1278 51.30% 37 Rhetoric 0.10.d 2083.6 1525 45.70% 38 Prophet 2.0 Epsilon 2 2081.2 26 40.40% 39 Parrot 070722 2081.2 1606 50.30% 40 King's Out 0.2.42 2065.3 1038 53.30% 41 Matheus 2.3 2061.7 3715 48.50% 42 Dolphin 1.0 2061.0 1291 46.00% 43 Monarch 1.7 2057.2 2510 53.60% 44 Bodo 0.2b 2054.2 2591 46.50% 45 ChessMind 0.82 2053.8 1330 50.30% 46 Gerbil 0.2 64-bit 2044.7 2688 53.00% 47 Jabba 1.0 64-bit 2042.9 1335 50.80% 48 Ax 0.8 2042.5 2669 43.60% 49 Bestia 0.90 2042.4 3907 46.70% 50 RDChess 3.23 2042.0 1974 53.40% 51 ZCT 0.3.2500 64-bit 2033.5 805 51.40% 52 ProChess 101CN 2031.0 1394 53.30% 53 PLP 1661571 2029.5 1397 53.00% 54 Zeta Dva 0210 64-bit 2022.5 1072 50.70% 55 Freyr 1.068 64-bit 2022.1 410 55.20% 56 Gibbon 2.01b 2020.1 272 42.60% 57 DelphiMAX 2.9 2017.8 2352 45.10% 58 Requiem 0.53 2007.6 2003 49.50% 59 AdroitChess 0.3 2004.9 999 58.10% 60 Sjaak 399 2001.8 1038 48.30% 61 Armageddon 2.308 2001.7 1939 48.50% 62 Cupcake 1.0 1994.5 1172 44.20% 63 BigLion 2.23x 1994.2 4049 46.50% 64 Elephant 1.06 1994.0 2417 46.80% 65 FrankWalter 1.08 1994.0 1477 48.10% 66 Small Potato 0.6.1 1992.5 2985 49.60% 67 Bubble 1.5 1989.5 1488 48.20% 68 Gullydeckel 2.16pl1 1986.2 2418 51.20% 69 Faile 1.4.4 1978.7 4220 43.50% 70 Etude 0.1.2 1973.4 1499 48.60% 71 Cilian 4.14 1973.1 2231 46.70% 72 Monik 2.2.3 64-bit 1973.0 1311 50.20% 73 SSEChessII 2.05 DC 1972.4 2809 53.40% 74 Matant 5.04 1971.9 1614 55.40% 75 BSC 3.9 1968.9 1049 50.70% 76 La Dame Blanche 2.0c 1967.8 1557 53.10% 77 Soldat III 0.172 1967.2 1102 50.50% 78 Marvin 1.3.0 1966.0 3859 47.60% 79 JanWillem 1.13 1961.1 3188 47.30% 80 Rival 1.18 1953.5 2745 52.60% 81 Micro-Max 4.8 1953.2 4186 47.00% 82 Mustang 4.97 1943.8 1935 52.00% 83 ChessKISS 1.3 1942.7 1806 52.50% 84 Sharper 0.17 1940.3 2574 44.90% 85 Protej 0.57 1938.9 401 45.50% 86 Smash 1.0.3 1929.7 3367 48.90% 87 BibiChess 0.5 1922.2 2828 49.30% 88 IACH 0.56z 1920.7 2016 54.60% 89 Eagle 0.7.5 1915.7 2397 52.30% 90 Dabbaba 7.49 1915.3 969 46.90% 91 Clueless V1.4 1912.9 3647 51.90% 92 BamBam 1910.0 1423 42.90% 93 Warrior 1.0.3 1903.9 3104 51.30% 94 SnailChess 4.013 1899.5 2194 55.00% 95 Morphy 3.22 1896.6 2074 53.70% 96 Purple Haze 2.1.0 1883.1 1041 51.00% 97 Surprise 4.3b13 1882.7 1102 47.30% 98 MrChess 2.1 1872.9 404 58.90% 99 SamChess 1871.0 406 58.60% 100 MadChess 1.0 64-bit 1865.8 948 44.60% 101 Roce 0.0390 1857.8 1777 49.80% 102 Simontacchi 1.81 1856.6 1718 56.70% 103 HeavyChess 0.13 beta 1850.6 402 59.80% 104 Celes 0.77c 1848.1 1661 54.90% 105 Tyrell 1.02 1836.6 405 53.80% 106 JARS 1.75a 1836.5 400 57.90% 107 FreeChessII 2.17 1835.8 401 53.70% 108 Ajedrez Tactico 2.73b 1834.2 1184 53.00% 109 MatMoi 7.15.0-cct 1827.9 1045 54.30% 110 NoonianChess 3206P2 1827.7 395 56.60% 111 Ranita 2.4 1826.1 1869 51.70% 112 Arabian Knight 1.51 1826.1 398 52.40% 113 RataAeroespacial 0.2.1 1824.3 1064 53.70% 114 Predateur 2.1 64-bit 1811.7 1933 49.30% 115 Cecir 3.5 1805.8 1854 49.80% 116 Milady 3.04 1805.6 782 48.10% 117 Beaches 2.32 1805.2 2109 46.80% 118 Enigma 1.1.4 1803.9 1555 52.60% 119 Grizzly 1.40.1b 1784.2 2112 53.50% 120 Chenard 2010.08.23 64-bi 1776.2 1888 48.80% 121 Bremboce 0.6.2 1776.0 404 49.10% 122 Embracer 1.12 1774.8 1815 51.90% 123 Pulsar 2009-9b 1772.3 381 60.20% 124 Macromix 2.01 1765.3 395 52.20% 125 Mint 2.3 1763.0 400 59.10% 126 Robin 0.983 1758.4 2438 51.60% 127 Lodocase 240208 1756.2 391 46.20% 128 Elf 1.3.0 1747.1 3596 45.10% 129 Vicki 0.041a 1745.7 399 56.50% 130 Rocinante 2.0 64-bit (mc 1742.9 752 48.50% 131 Laurifer 1.0 1740.5 3238 46.70% 132 Kanguruh 1.93 1734.5 2270 54.10% 133 Adamant 1.7 1726.4 3874 45.90% 134 GChess IV 0.2.0 1717.4 1861 59.10% 135 Tscp 1.81 1711.6 2494 47.60% 136 SEE 0.6.9 1711.3 2370 54.10% 137 Aldebaran 0.7.0 1709.7 2403 47.30% 138 Ziggy 0.7 1697.0 289 66.80% 139 RumbleMinze 1.0.33 1693.0 490 40.40% 140 Tristram 3.36 1692.4 398 48.70% 141 Bace 0.45 1692.3 2602 52.60% 142 Golem 0.441 1691.9 115 52.20% 143 Gargamella 0.5.0 1685.6 1178 51.20% 144 Zoidberg 0.1 1682.4 399 47.20% 145 Jester 0.84 1680.3 990 51.10% 146 Mizar 3.0 1679.2 3379 48.10% 147 PolarChess 1.3 1676.4 2236 53.70% 148 JaksaH 1.11 64-bit 1669.3 1853 55.20% 149 Cmcchess 2.5 1666.0 889 65.10% 150 Belzebub 0.67 1662.6 2636 50.40% 151 ALChess 1.5b 1656.3 1979 44.00% 152 DChess 1.0.2 1650.2 2462 50.20% 153 Pooky 2.7 1644.2 1479 51.30% 154 Simon 1.2 64-bit 1641.0 1337 50.40% 155 Vapor 0.01r12 1641.0 1565 55.30% 156 ChessterfieldCL i5a 1635.4 979 40.80% 157 IQ23.003 1635.0 2158 47.00% 158 ChessRikus 1.466 1629.8 1337 48.50% 159 MSCP 1.44 1625.4 3000 46.90% 160 Rainman 0.7.5 1618.5 848 40.60% 161 Storm 0.6 1617.2 3199 45.30% 162 Rocinante 2.0 64-bit (PB 1613.6 437 30.80% 163 Butterfly 0.5 64-bit 1608.7 533 53.60% 164 Kitteneitor 0.12.1 1593.5 324 50.60% 165 Philemon C 1578.1 119 37.00% 166 Zotron 4.4.6 1576.7 2524 46.60% 167 SdBC 0.41.40 1575.0 1265 43.40% 168 Hokus-Pokus 0.6.3 1569.6 115 36.10% 169 Needle 0.531 1569.0 3099 43.10% 170 Damas 9 1565.9 1599 50.80% 171 Larsen VB 0.05.0001 1535.8 2141 43.40% 172 SharpChess2 2.6 1535.0 1747 43.70% 173 mACE 0.2.2.616 1532.2 1003 46.90% 174 VanillaChess 2.6g 1518.7 115 30.40% 175 Alibaba 1.38 1514.9 107 29.90% 176 Vajolet 0.4.1 1502.8 1629 44.40% 177 Piranha 0.5 1493.6 2741 38.50% 178 Purple Haze 2.0 1491.7 2435 33.40% 179 Exacto 0.d 1491.1 2232 41.80% 180 Tarrasch Toy Engine 0.90 1479.4 1870 42.30% 181 St Andersen 1.31 64-bit 1475.5 1382 41.00% 182 HoiChess 0.103 64-bit 1472.2 48 86.50% 183 APILChess 1.05r1b 1470.9 1502 42.70% 184 Yawce 0.16 1467.6 140 40.40% 185 Pentagon 1.2 1466.3 724 38.30% 186 Roque 1.1 1462.3 1399 44.40% 187 Blikskottel 0.8 1444.7 1110 43.70% 188 Nero 6.1 1433.0 1457 38.40% 189 Suff 0.3.a 1432.1 111 21.60% 190 Braincrack alpha 1417.3 109 19.70% 191 MiniMardi 1.3 1392.4 2372 32.00% 192 Tony's Chess 0.02 1390.7 1437 43.50% 193 JChess 1.0 1382.5 1040 37.60% 194 Eden 0.0.13 1377.2 1530 35.20% 195 Goyaz 0.007 1371.4 495 57.70% 196 Numpty Omega 1364.9 1662 32.80% 197 Fimbulwinter 5.00 1335.6 522 48.70% 198 Virutor Chess 1.1 1332.3 849 40.30% 199 Joanna 2002 1.03 1331.5 643 41.10% 200 MiniChessAI 1.19 1329.5 757 57.80% 201 Gedeone 1620 1321.3 50 76.00% 202 Skaki 1.23 1319.0 365 62.20% 203 Nanook 0.17 1315.9 1018 43.90% 204 Supra 12.0 1315.2 240 35.20% 205 uMax 1.6w 1310.4 313 60.70% 206 Ozwald 0.43 1280.2 769 51.80% 207 KillerQueen 2.0b3 1266.2 781 50.80% 208 TRex 1.9 1260.4 830 49.90% 209 QuTeChess 1.0.1t r3 1245.4 415 60.40% 210 Tikov 0.6.3 1230.4 957 49.90% 211 Gringo 1.4.9b 1201.6 902 48.00% 212 Raffaela 0.1.4 1198.2 955 46.60% 213 Toledo nanoChess v150120 1193.6 967 46.20% 214 DarkFusch 0.9 1191.5 500 51.50% 215 Pierre 1.7 1179.4 667 50.10% 216 GrayMatter SVN1604 1169.6 247 34.40% 217 BlitzKibitz 5 1133.7 273 37.20% 218 Usurpator II 1118.8 490 62.40% 219 JChecs 0.1.0 1107.3 481 57.30% 220 Brama 051204 1100.8 313 47.60% 221 Cassandre 0.24 1086.4 499 54.00% 222 Frank 0.58 1039.0 396 41.00% 223 Blitzter 2.0 1033.8 329 58.20% 224 Hanzo The Razor 1027.0 272 55.00% 225 Talvmenni 0.1 1019.2 305 52.00% 226 Strategic Deep 1.25 1015.3 645 50.00% 227 Xadreco 5.7 984.0 440 43.40% 228 Safrad 2.1.35.210 975.5 1401 37.80% 229 GIUChess 1.0 beta2 953.3 303 49.70% 230 Youk 1.0.5 931.9 291 46.70% 231 Testina 2.2 930.7 414 58.00% 232 Kace 0.82 928.5 283 45.90% 233 NSVChess v0.14 907.0 362 51.70% 234 Iota 1.0 32-bit 887.9 440 51.80% 235 Chad's Chess 0.15 870.3 1102 33.10% 236 Dika 0.4209 808.5 304 43.60% 237 Dreamer 789.7 343 64.40% 238 Neurone XVIII 738.1 241 20.50% 239 Hippocampe 0.4.1 731.7 317 58.80% 240 Pyotr 0.6 AM 671.3 464 50.00% 241 Chess4j 0.1 624.0 713 29.70% 242 EasyPeasy 1.0.0.0 523.8 698 27.40% 243 ReBorn Mainsworthy 1.30 498.9 213 56.30% 244 MicroChess 1976 451.4 196 56.40% 245 NEG 0.3d 402.8 435 37.70% 246 Ram 2.0 375.2 435 33.20% 247 LaMoSca 0.10 305.4 286 31.10% 248 CPP1 282.2 255 28.60% 249 ACE 0.1 144.9 473 14.20% 250 POS 1.20 110.9 298 18.60% 251 Brutus RND 0.0 306 10.50%