using a Snake Viewer written by Markus Sigg
L=393 found by Hugo Pfoertner 2010 Aug 28
L=367 found by Hugo Pfoertner and Markus Sigg 2008 Mar 4 (symmetric)
L=367 found by Markus Sigg and Hugo Pfoertner 2008 Jun 16
L=363 found by Hugo Pfoertner and Markus Sigg 2008 Apr 29 (symmetric)
L=363 found by Hugo Pfoertner and Markus Sigg 2008 Apr 29 (symmetric)
L=363 found by Hugo Pfoertner and Markus Sigg 2008 Jun 16 (symmetric)
L=361 found by Vadim Trofimov 2007 Sep 3 13:20:08 (symmetric)
L=357 found by Hugo Pfoertner and Markus Sigg 2008 Mar 3 (symmetric)
L=355 found by Hugo Pfoertner and Markus Sigg 2008 Jun 18 (symmetric)
L=353 found by Hugo Pfoertner and Markus Sigg 2008 Jun 18 (symmetric)
L=353 found by Hugo Pfoertner and Markus Sigg 2008 Jun 18 (symmetric)
L=351 found by Hugo Pfoertner and Markus Sigg 2008 Jun 22 (symmetric)
L=351 found by Hugo Pfoertner and Markus Sigg 2008 Jun 22 (symmetric)
L=349 found by Markus Sigg and Hugo Pfoertner 2008 Feb 18
L=349 found by Markus Sigg and Hugo Pfoertner 2008 Apr 11 (symmetric)
L=349 found by Hugo Pfoertner using programs written by Markus Sigg and Klaus Nagel 2008 May 24
L=349 found by Markus Sigg and Hugo Pfoertner 2008 Jun 15 (symmetric)
L=347 found by Vadim Trofimov 2007 Sep 2 19:01:39 (symmetric)
L=345 found by Markus Sigg 2007 Nov 7 08:06:51 (symmetric)
L=345 found by Markus Sigg and Hugo Pfoertner 2008 Feb 26 (symmetric)
L=345 found by Hugo Pfoertner using programs written by Markus Sigg and Klaus Nagel 2008 May 18
L=342 found by Michael van Fondern 2007 Nov 16 19:30:08
L=341 found by Markus Sigg 2007 Nov 6 20:13:43 (symmetric)
L=341 found by Markus Sigg 2008 Feb 19 (symmetric)
L=341 found by Hugo Pfoertner using programs written by Markus Sigg and Klaus Nagel 2008 Feb 27
L=341 found by Hugo Pfoertner and Markus Sigg 2008 Jun 7 (symmetric)
L=341 found by Hugo Pfoertner using programs written by Markus Sigg and Klaus Nagel 2008 Jul 2
L=339 found by Michael van Fondern 2007 Nov 7 06:46:37
L=335 found by Markus Sigg 2008 Feb 19 (symmetric)
L=334 found by Michael van Fondern 2007 Nov 3 06:36:08
L=330 found by Michael van Fondern 2007 Oct 27 05:51:07
L=326 found by Michael van Fondern 2007 Oct 17 06:04:25
L=323 found by Michael van Fondern 2007 Oct 16 20:19:04
L=321 found by Honza Stola 2007 Sep 4 09:30:44 (symmetric)
L=320 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Nov 2 18:00:11
L=318 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Nov 1 21:23:28
L=315 found by Michael van Fondern 2007 Oct 15 20:44:58
L=315 found by Markus Sigg 2007 Oct 20 12:25:46 (symmetric)
L=314 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Oct 28 09:03:07
L=313 found by Michael van Fondern 2007 Sep 28 05:49:35
L=310 found by Hermann Jurksch 2012 Sep 17 (closed) (symmetric)
L=308 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Oct 25 12:42:43
L=308 found by Fred Mellender 2007 Nov 18 16:42:28
L=307 found by Hugo Pfoertner and Markus Sigg 2008 Mar 25
L=305 found by Michael van Fondern 2007 Sep 27 05:33:20
L=304 found by Moritz Franckenstein 2007 Nov 15 19:35:45
L=303 found by Fred Mellender 2007 Sep 15 20:40:23
L=303 found by Mark Beyleveld 2007 Sep 22 01:35:30
L=302 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Oct 26 06:17:27
L=302 found by Moritz Franckenstein 2007 Nov 15 10:17:17
L=301 found by Mark Beyleveld 2007 Sep 22 01:15:26
L=300 found by Mark Beyleveld 2007 Sep 3 01:34:16
L=299 found by Mark Beyleveld 2007 Sep 3 01:33:50
L=299 found by Markus Sigg 2007 Oct 20 09:29:27 (symmetric)
L=299 found by Klaus Nagel & Hugo Pfoertner & Rainer Rosenthal 2007 Nov 19 15:28:39
L=298 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Oct 25 12:28:58
L=297 found by Moritz Franckenstein 2007 Nov 15 09:43:04
L=296 found by Moritz Franckenstein 2007 Nov 10 12:52:00
L=295 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Oct 3 09:01:26
L=295 found by Moritz Franckenstein 2007 Nov 9 20:31:02
L=294 found by Fred Mellender 2007 Sep 12 12:10:42
L=294 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 28 12:20:58
L=293 found by Mark Beyleveld 2007 Aug 21 23:11:26
L=293 found by Michael van Fondern 2007 Sep 25 05:41:26
L=292 found by Mark Beyleveld 2007 Aug 21 23:11:00
L=292 found by Fred Mellender 2007 Sep 10 09:57:21
L=291 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 28 07:38:41
L=290 found by Fred Mellender 2007 Sep 2 18:57:42
L=290 found by Moritz Franckenstein 2007 Oct 1 08:21:26
L=289 found by Michael van Fondern 2007 Sep 23 07:05:55
L=287 found by Daumilas Ardickas 2007 Sep 5 11:38:33
L=282 found by Michael van Fondern 2007 Sep 22 20:04:46
L=281 found by James J Youlton Jr 2007 Sep 3 02:36:44
L=281 found by Ivan Kazmenko 2007 Sep 11 10:08:07 (symmetric)
L=281 found by Moritz Franckenstein 2007 Sep 15 08:58:23
L=280 found by James J Youlton Jr 2007 Sep 3 02:36:12
L=279 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 26 18:54:42
L=278 found by QfwfQ 2007 Nov 13 17:06:55
L=276 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 22 09:40:29
L=275 found by Joshua Zucker 2007 Sep 27 13:47:01
L=274 found by Hugo Pfoertner and Hermann Jurksch 2016 Jan 28 (closed)
L=273 found by Yirmy Yasovsky 2007 Oct 1 22:57:36
L=272 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 21 19:34:28
L=271 found by Joshua Zucker 2007 Sep 27 13:45:03
L=270 found by Honza Stola 2007 Sep 3 10:01:12
L=270 found by Hermann Jurksch 2012 Aug 28 (closed)
L=269 found by James J Youlton Jr 2007 Sep 3 02:22:02
L=268 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 20 12:46:29
L=266 found by Kevin Burfitt 2007 Sep 2 22:44:15
L=266 found by Hermann Jurksch 2012 Aug 19 (closed)
L=265 found by Markus Sigg 2007 Sep 6 17:09:54 (symmetric)
L=265 found by Ivan Kazmenko 2007 Sep 11 09:57:59 (symmetric)
L=264 found by Olivier Buffet & Dmitry Kamenetsky 2007 Sep 3 12:32:05
L=264 found by Joshua Zucker 2007 Sep 5 04:26:11
L=264 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 20 06:25:52
L=264 found by QfwfQ 2007 Oct 5 09:05:57
L=260 found by James J Youlton Jr 2007 Aug 23 07:02:27
L=258 found by Klaus Nagel & Hugo Pfoertner & Rainer Rosenthal 2007 Nov 6 18:23:06
L=258 found by Boris von Loesch 2007 Nov 20 17:44:36
L=257 found by James J Youlton Jr 2007 Aug 23 06:14:07
L=257 found by Yirmy Yasovsky 2007 Sep 19 19:11:46
L=257 found by Boris von Loesch 2007 Nov 20 17:36:42
L=255 found by Moritz Franckenstein 2007 Sep 12 20:05:27
L=255 found by Boris von Loesch 2007 Nov 20 17:25:38
L=253 found by Markus Sigg 2007 Sep 6 15:59:48 (symmetric)
L=253 found by Ivan Kazmenko 2007 Sep 8 20:43:34 (symmetric)
L=252 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 11 12:30:53
L=249 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Sep 3 00:06:29
L=249 found by Ivan Kazmenko 2007 Sep 8 20:34:20 (symmetric)
L=249 found by Ivan Kazmenko 2007 Sep 8 20:39:06 (symmetric)
L=247 found by Klaus Nagel & Hugo Pfoertner & Rainer Rosenthal 2007 Sep 21 09:03:44
L=247 found by Michael van Fondern 2007 Sep 22 14:58:30
L=245 found by Markus Sigg 2007 Sep 3 21:15:55 (symmetric)
L=244 found by Yirmy Yasovsky 2007 Sep 8 21:50:11
L=243 found by Ivan Kazmenko 2007 Sep 8 20:37:18 (symmetric)
L=243 found by Juha Saukkola 2007 Oct 26 07:15:54
L=242 found by Kevin Burfitt 2007 Aug 23 13:33:03
L=242 found by Juergen Winterberg 2007 Nov 7 21:58:12
L=242 found by Hermann Jurksch 2012 Aug 7 (closed)
L=241 found by Eckard Specht & Dietmar Viertel & Martin Wohlgemuth 2007 Aug 21 07:11:38
L=241 found by Markus Sigg 2007 Sep 3 21:14:08 (symmetric)
L=241 found by Yirmy Yasovsky 2007 Sep 6 22:30:38
L=241 found by Michael van Fondern 2007 Sep 20 05:51:04
L=238 found by Michael van Fondern 2007 Sep 17 11:15:19
L=235 found by James J Youlton Jr 2007 Sep 3 02:38:20
L=235 found by Michael Collier 2007 Nov 6 04:16:12
L=234 found by James Buddenhagen 2007 Sep 30 00:10:08
L=234 found by Alexander Lyashuk 2007 Nov 6 17:24:51
L=233 found by Mark Gordon 2007 Sep 9 06:13:02
L=230 found by Hermann Jurksch 2012 Jul 5 (closed)
L=229 found by Boris von Loesch 2007 Nov 20 16:24:33
L=229 found by Michael J Gayle 2007 Nov 21 04:40:03
L=228 found by Yirmy Yasovsky 2007 Sep 6 20:49:43
L=228 found by Juergen Winterberg 2007 Oct 29 17:20:58
L=226 found by Joshua Zucker 2007 Sep 4 21:57:37
L=226 found by James Buddenhagen 2007 Sep 5 01:04:17
L=225 found by QfwfQ 2007 Sep 27 08:53:07
L=224 found by G.R.A.20 Problem Solving 2007 Sep 2 19:59:38
L=224 found by James Buddenhagen 2007 Sep 5 00:43:08
L=224 found by Jesse Kolman 2007 Nov 21 07:04:44
L=223 found by Markus Sigg 2007 Sep 2 18:25:20
L=220 found by Henry Song 2007 Sep 26 22:43:16
L=217 found by Kevin Burfitt 2007 Aug 23 12:51:43
L=215 found by Markus Sigg 2007 Aug 21 21:46:26
L=215 found by James Buddenhagen 2007 Aug 22 03:56:05
L=215 found by Vadim Trofimov 2007 Aug 26 11:34:56
L=215 found by Yirmy Yasovsky 2007 Sep 1 20:54:44
L=213 found by Markus Sigg 2007 Aug 21 21:40:10
L=212 found by Michael van Fondern 2007 Sep 16 07:11:22
L=212 found by QfwfQ 2007 Sep 20 08:00:06
L=212 found by Jesse Kolman 2007 Nov 20 20:41:18
L=211 found by Mark Gordon 2007 Sep 5 05:00:04
L=210 found by Michael van Fondern 2007 Sep 14 18:36:21
L=209 found by Frank Buss 2007 Sep 3 15:32:12
L=209 found by SuperRock 2007 Sep 6 03:41:31 (same as Sep 3 15:32:12)
L=209 found by Mike White Nov 16 16:10:31 (same as 2007 Sep 3 15:32:12)
L=209 found by Tobias Baumann Nov 16 16:18:31 (same as 2007 Sep 3 15:32:12)
L=208 found by Yirmy Yasovsky 2007 Aug 21 20:35:23
L=208 found by Moritz Franckenstein 2007 Sep 2 17:23:06
L=208 found by Brian Adams Nov 7 22:42:05 (same as 2007 Sep 2 17:23:06)
L=208 found by Tobias Baumann Nov 14 08:01:28 (same as 2007 Sep 2 17:23:06)
L=208 found by Mike White Nov 16 07:15:49 (same as 2007 Sep 2 17:23:06)
L=207 found by Fred Mellender 2007 Sep 2 19:03:58
L=204 found by Sebastian Mingramm 2007 Sep 8 20:28:11
L=203 found by Polegenko Vladimir 2007 Nov 7 14:02:35
L=202 found by Daumilas Ardickas 2007 Aug 25 05:44:10
L=202 found by Moritz Franckenstein 2007 Aug 27 14:26:45
L=202 found by Mark Mammel 2007 Sep 7 13:26:10
L=202 found by Steve Trevorrow 2007 Oct 7 07:50:32
L=202 found by Tobias Baumann Nov 14 07:52:06 (same as 2007 Aug 27 14:26:45)
L=200 found by Joshua Zucker 2007 Sep 3 21:38:29
L=197 found by Fred Mellender 2007 Aug 27 09:22:00
L=196 found by Fred Mellender 2007 Aug 22 02:22:53
L=196 found by Olivier Buffet & Dmitry Kamenetsky 2007 Aug 23 03:52:05
L=195 found by James J Youlton Jr 2007 Aug 31 00:54:34
L=195 found by Johan Stang 2007 Sep 22 20:21:53
L=195 found by Jesse Kolman 2007 Nov 9 04:18:01
L=195 found by Mike White 2007 Nov 16 07:03:55
L=194 found by James J Youlton Jr 2007 Aug 31 00:53:54
L=193 found by Markus Sigg 2007 Aug 20 18:38:25
L=192 found by Mark Mammel 2007 Aug 25 22:28:34
L=187 found by Sabur Zaheed (AIUB) 2007 Aug 21 16:18:29
L=187 found by Gregor Heitkamp 2007 Sep 26 23:30:39
L=186 found by Steve Trevorrow 2007 Oct 7 00:04:55
L=185 found by G.R.A.20 Problem Solving 2007 Aug 29 13:45:12
L=185 found by James J Youlton Jr 2007 Aug 31 00:56:48
L=184 found by James Buddenhagen 2007 Sep 4 21:57:14
L=184 found by David Rendo Rodriguez 2007 Oct 4 14:43:16
L=183 found by G.R.A.20 Problem Solving 2007 Aug 26 22:33:13
L=183 found by Gregor Heitkamp 2007 Sep 26 22:06:00
L=183 found by Steve Trevorrow 2007 Oct 6 20:36:18
L=180 found by Frank Buss 2007 Aug 24 12:52:20
L=180 found by Honza Stola 2007 Aug 30 17:32:27
L=180 found by SuperRock 2007 Sep 4 17:02:40
L=179 found by Brad Smith 2007 Oct 29 15:29:27
L=178 found by Mark Mammel 2007 Aug 21 16:25:28
L=177 found by Sebastian Mingramm 2007 Sep 6 18:42:59
L=176 found by Kevin Burfitt 2007 Aug 29 04:19:56
L=176 found by SuperRock 2007 Sep 4 11:48:22
L=176 found by Gregor Heitkamp 2007 Sep 18 22:22:41
L=174 found by Konrad Rodzik 2007 Nov 5 22:08:23
L=173 found by Evgeni Lukin 2007 Oct 14 09:38:51
L=172 found by Joshua Zucker 2007 Aug 23 15:21:06
L=172 found by Gregor Heitkamp 2007 Sep 17 21:40:29
L=167 found by Joshua Zucker 2007 Aug 21 15:11:17
L=167 found by Gregor Heitkamp 2007 Sep 17 18:05:43
L=166 found by Henry Song 2007 Sep 23 00:27:28
L=164 found by Moritz Franckenstein 2007 Nov 8 21:43:18 (closed)
L=163 found by Adrian Krolak 2007 Nov 5 08:29:49
L=162 found by G.R.A.20 Problem Solving 2007 Aug 26 22:31:10
L=161 found by Jesse Kolman 2007 Nov 20 20:30:42
L=159 found by G.R.A.20 Problem Solving 2007 Aug 26 13:54:35
L=158 found by Jesse Kolman 2007 Nov 6 09:16:44
L=153 found by Joshua Zucker 2007 Aug 21 16:48:24
L=153 found by Juha Saukkola 2007 Aug 26 11:06:42
L=152 found by Hyung-Sul Kim 2007 Oct 29 06:40:19
L=152 found by Adrian Krolak 2007 Nov 5 08:26:00
L=152 found by Magnus Jansson 2007 Nov 8 22:46:16
L=150 found by Honza Stola 2007 Aug 30 09:48:36
L=146 found by Fironov Sergey 2007 Aug 27 12:37:24
L=144 found by Fironov Sergey 2007 Aug 27 12:36:58
L=142 found by Juha Saukkola 2007 Aug 24 11:15:58
L=142 found by Fironov Sergey 2007 Aug 27 12:35:53
L=142 found by Fironov Sergey 2007 Aug 27 12:36:34
L=141 found by Jesse Kolman 2007 Nov 20 20:30:00
L=141 found by Jesse Kolman 2007 Nov 21 07:23:59
L=138 found by Brad Smith 2007 Oct 29 01:28:06
L=135 found by Fironov Sergey 2007 Aug 27 11:21:07
L=134 found by Joshua Zucker 2007 Aug 21 16:47:25
L=131 found by Jesse Kolman 2007 Nov 21 07:23:42
L=129 found by Antti Ahti 2007 Sep 14 11:14:49
L=128 found by Sebastian Mingramm 2007 Sep 5 12:42:52
L=125 found by Juha Saukkola 2007 Aug 29 10:26:07
L=122 found by G.R.A.20 Problem Solving 2007 Aug 29 16:03:10
L=121 found by Juha Saukkola 2007 Aug 26 10:25:12
L=121 found by Brad Smith 2007 Oct 28 20:31:36
L=120 found by Fironov Sergey 2007 Aug 27 11:14:56
L=119 found by Jesse Kolman 2007 Nov 20 20:29:13
L=119 found by Jesse Kolman 2007 Nov 21 07:22:11
L=117 found by Adam Panagos 2007 Aug 25 01:44:12
L=117 found by Jesse Kolman 2007 Nov 21 07:22:05
L=116 found by Magnus Jansson 2007 Aug 28 10:03:03
L=115 found by Magnus Jansson 2007 Aug 28 10:02:00
L=114 found by Jesse Kolman 2007 Nov 21 07:21:48
L=113 found by Adrian Krolak 2007 Nov 4 20:26:30
L=112 found by Magnus Jansson 2007 Aug 28 10:01:29
L=112 found by Jesse Kolman 2007 Nov 21 07:20:29
L=108 found by Jesse Kolman 2007 Nov 21 07:20:19
L=107 found by David Rendo Rodriguez 2007 Sep 11 07:31:16
L=107 found by Adrian Krolak 2007 Nov 4 20:23:04
L=105 found by Fironov Sergey 2007 Aug 27 10:55:38
L=103 found by Jesse Kolman 2007 Nov 21 07:19:57
L=102 found by Leonid Shishlo 2007 Aug 21 23:01:19
L=102 found by Florian Beye 2007 Oct 9 16:35:48
L=100 found by Gregor Heitkamp 2007 Sep 9 22:47:35
L=100 found by Brad Smith 2007 Oct 15 21:53:20
L= 99 found by Neil Smith 2007 Nov 20 22:41:55
L= 98 found by Jesse Kolman 2007 Nov 21 07:19:28
L= 96 found by Leonid Shishlo 2007 Aug 21 22:51:36
L= 94 found by Jesse Kolman 2007 Nov 21 07:19:14
L= 93 found by Leonid Shishlo 2007 Aug 21 22:49:14
L= 93 found by Jesse Kolman 2007 Nov 20 20:28:21
L= 92 found by Jesse Kolman 2007 Nov 21 07:18:51
L= 91 found by Magnus Jansson 2007 Oct 16 22:51:44
L= 91 found by Jesse Kolman 2007 Nov 20 20:28:06
L= 89 found by Jesse Kolman 2007 Nov 20 20:27:57
L= 85 found by Jesse Kolman 2007 Nov 20 20:27:47
L= 81 found by Jesse Kolman 2007 Nov 20 20:27:35
L= 80 found by David Rendo Rodriguez 2007 Sep 8 08:09:13
L= 75 found by Jesse Kolman 2007 Nov 20 20:27:23
L= 73 found by Jesse Kolman 2007 Nov 20 20:27:17
L= 71 found by Jesse Kolman 2007 Nov 20 20:27:05
L= 66 found by Jesse Kolman 2007 Nov 20 20:26:54
L= 63 found by Adam Panagos 2007 Aug 24 02:11:52
L= 53 found by Jesse Kolman 2007 Nov 20 20:26:17
L= 51 found by Jesse Kolman 2007 Nov 20 20:26:08
L= 50 found by Adam Panagos 2007 Aug 22 04:36:22
L= 49 found by Jesse Kolman 2007 Nov 20 20:25:47
L= 43 found by Jesse Kolman 2007 Nov 20 21:29:40
L= 37 found by Jesse Kolman 2007 Nov 20 21:19:34
L= 35 found by Jesse Kolman 2007 Nov 20 21:19:20
L= 33 found by Gregory Horvath 2007 Oct 17 21:23:35
L= 31 found by Jesse Kolman 2007 Nov 20 21:18:54
L= 30 found by Jesse Kolman 2007 Nov 20 20:25:06
L= 29 found by Gregory Horvath 2007 Oct 17 21:27:44 (symmetric)
L= 29 found by Jesse Kolman 2007 Nov 20 20:24:58
L= 29 found by Jesse Kolman 2007 Nov 20 20:49:59
L= 27 found by Jesse Kolman 2007 Nov 20 20:24:23
L= 27 found by Jesse Kolman 2007 Nov 20 20:24:49
L= 27 found by Jesse Kolman 2007 Nov 20 20:47:08
L= 27 found by Jesse Kolman 2007 Nov 20 21:18:23
L= 25 found by Gregory Horvath 2007 Oct 17 21:22:39
L= 24 found by Gregory Horvath 2007 Oct 17 21:24:41
L= 24 found by Jesse Kolman 2007 Nov 20 21:17:06
L= 24 found by Jesse Kolman 2007 Nov 20 21:17:24
L= 23 found by Gregory Horvath 2007 Oct 17 21:24:33
L= 22 found by Gregory Horvath 2007 Oct 17 21:24:23
L= 22 found by Jesse Kolman 2007 Nov 20 21:16:51
L= 21 found by Gregory Horvath 2007 Oct 17 21:24:15
L= 21 found by Jesse Kolman 2007 Nov 20 20:24:43
L= 20 found by Gregory Horvath 2007 Oct 17 21:23:03
L= 19 found by Gregory Horvath 2007 Oct 17 21:22:15
L= 19 found by Gregory Horvath 2007 Oct 17 21:22:26
L= 18 found by Gregory Horvath 2007 Oct 17 21:23:14
L= 17 found by Gregory Horvath 2007 Oct 17 21:22:01 (symmetric)
L= 17 found by test 2007 Oct 23 11:46:13 (symmetric) (same as Oct 17 21:22:01)
L= 15 found by Jesse Kolman 2007 Nov 20 20:24:34
L= 12 found by Jesse Kolman 2007 Nov 20 21:09:45
L= 11 found by Magnus Jansson 2007 Aug 24 16:54:59 (symmetric)
L= 11 found by Brad Smith Sep 25 22:17:46 (symmetric) (same as 2007 Aug 24 16:54:59)