These are the basis for shuttles originally found (I assume) by David Buckingham in 1973 and reported in a reader article by Mark Niemiec in Lifeline Volume 11 (see here). Note that the image in Lifeline doesn't quite work, as the top queen bee is one cell too high. Here is the corrected pattern:rutabaga wrote: ↑February 26th, 2023, 12:25 pmI like this pre-pulsar based oscillator on a cylinder and its extensibilityCode: Select all
x = 12, y = 9, rule = B3/S23:T24,0 b2o6b2o$3o6b3o$b2o6b2o4$b2o6b2o$3o6b3o$b2o6b2o!
Code: Select all
x = 18, y = 97, rule = B3/S23:T24,0 2$2o14b2o$3o12b3o$2o14b2o4$b2o12b2o$3o12b3o$b2o12b2o4$b2o12b2o$3o12b3o $b2o12b2o4$b2o12b2o$3o12b3o$b2o12b2o4$b2o12b2o$3o12b3o$b2o12b2o4$b2o12b 2o$3o12b3o$b2o12b2o4$b2o12b2o$3o12b3o$b2o12b2o4$b2o12b2o$3o12b3o$b2o12b 2o4$b2o12b2o$3o12b3o$b2o12b2o4$b2o12b2o$3o12b3o$b2o12b2o4$b2o12b2o$3o 12b3o$b2o12b2o4$b2o12b2o$3o12b3o$b2o12b2o4$b2o12b2o$3o12b3o$b2o12b2o4$ b2o12b2o$3o12b3o$b2o12b2o4$b2o12b2o$3o12b3o$b2o12b2o4$2o14b2o$3o12b3o $2o14b2o!
Code: Select all
x = 51, y = 48, rule = B3/S23
26b2o$26b2o11$24b2o3b2o$26b3o$10bobo12bo3bo8bobo$10bo3bo11bobo7bo3bo$
14bo12bo8bo$2o8bo4bo19bo4bo8b2o$2o12bo21bo12b2o$10bo3bo3b3o3b3o3b3o3bo
3bo$10bobo25bobo$16bo4bobo3bobo4bo$16bo4bobo3bobo4bo$16bo4bobo3bobo4bo
2$18b3o3b3o3b3o2$9bobo27bobo$7bo3bo27bo3bo$2o5bo35bo5b2o$2o4bo4bo27bo
4bo4b2o$7bo35bo$7bo3bo27bo3bo$9bobo27bobo5$24b2o3b2o$26b3o$25bo3bo$26b
obo$27bo4$26b2o$26b2o!Code: Select all
x = 57, y = 48, rule = B3/S23
23b2o7b2o$23b2o7b2o11$20b2o3b2o3b2o3b2o$22b3o7b3o$10bobo8bo3bo5bo3bo8b
obo$10bo3bo7bobo7bobo7bo3bo$14bo8bo9bo8bo$2o8bo4bo25bo4bo8b2o$2o12bo
27bo12b2o$10bo3bo3b3o3b3o3b3o3b3o3bo3bo$10bobo31bobo$16bo4bobo3bobo3bo
bo4bo$16bo4bobo3bobo3bobo4bo$16bo4bobo3bobo3bobo4bo2$18b3o3b3o3b3o3b3o
2$9bobo33bobo$7bo3bo33bo3bo$2o5bo41bo5b2o$2o4bo4bo33bo4bo4b2o$7bo41bo$
7bo3bo33bo3bo$9bobo33bobo5$20b2o3b2o3b2o3b2o$22b3o7b3o$21bo3bo5bo3bo$
22bobo7bobo$23bo9bo4$23b2o7b2o$23b2o7b2o!Code: Select all
x = 63, y = 44, rule = B3/S23
23bo7bo7bo$23bo7bo7bo2$23bo7bo7bo$22bobo5bobo5bobo2$22b3o5b3o5b3o3$22b
3o5b3o5b3o2$22bobo5bobo5bobo$10bobo10bo7bo7bo10bobo$10bo3bo33bo3bo$14b
o8bo7bo7bo8bo$2o8bo4bo7bo7bo7bo7bo4bo8b2o$2o12bo33bo12b2o$10bo3bo3b3o
3b3o3b3o3b3o3b3o3bo3bo$10bobo37bobo$16bo4bobo3bobo3bobo3bobo4bo$16bo4b
obo3bobo3bobo3bobo4bo$16bo4bobo3bobo3bobo3bobo4bo2$18b3o3b3o3b3o3b3o3b
3o2$9bobo39bobo$7bo3bo39bo3bo$2o5bo47bo5b2o$2o4bo4bo11bo7bo7bo11bo4bo
4b2o$7bo15bo7bo7bo15bo$7bo3bo39bo3bo$9bobo11bo7bo7bo11bobo$22bobo5bobo
5bobo2$22b3o5b3o5b3o3$22b3o5b3o5b3o2$22bobo5bobo5bobo$23bo7bo7bo2$23bo
7bo7bo$23bo7bo7bo!Code: Select all
x = 31, y = 44, rule = B3/S23
7bo7bo7bo$7bo7bo7bo2$7bo7bo7bo$6bobo5bobo5bobo2$6b3o5b3o5b3o3$6b3o5b3o
5b3o2$6bobo5bobo5bobo$7bo7bo7bo$2bo25bo$bobo3bo7bo7bo3bobo$2bo4bo7bo7b
o4bo2$2b3o3b3o3b3o3b3o3b3o2$o4bobo3bobo3bobo3bobo4bo$o4bobo3bobo3bobo
3bobo4bo$o4bobo3bobo3bobo3bobo4bo2$2b3o3b3o3b3o3b3o3b3o5$2bo4bo7bo7bo
4bo$bobo3bo7bo7bo3bobo$2bo25bo$7bo7bo7bo$6bobo5bobo5bobo2$6b3o5b3o5b3o
3$6b3o5b3o5b3o2$6bobo5bobo5bobo$7bo7bo7bo2$7bo7bo7bo$7bo7bo7bo!Code: Select all
x = 43, y = 68, rule = B3/S23
13bo7bo7bo$13bo7bo7bo2$13bo7bo7bo$12bobo5bobo5bobo2$12b3o5b3o5b3o3$12b
3o5b3o5b3o2$12bobo5bobo5bobo$13bo7bo7bo$8bo25bo$7bobo3bo7bo7bo3bobo$8b
o4bo7bo7bo4bo5$8b3o3b3o3b3o3b3o3b3o2$6bo4bobo3bobo3bobo3bobo4bo$6bo4bo
bo3bobo3bobo3bobo4bo$6bo4bobo3bobo3bobo3bobo4bo$2bo37bo$bobo4b3o3b3o3b
3o3b3o3b3o4bobo$2bo37bo2$2b3o3b3o3b3o3b3o3b3o3b3o3b3o2$o4bobo3bobo3bob
o3bobo3bobo3bobo4bo$o4bobo3bobo3bobo3bobo3bobo3bobo4bo$o4bobo3bobo3bob
o3bobo3bobo3bobo4bo2$2b3o3b3o3b3o3b3o3b3o3b3o3b3o5$2bo37bo$bobo35bobo$
2bo37bo2$8b3o3b3o3b3o3b3o3b3o2$6bo4bobo3bobo3bobo3bobo4bo$6bo4bobo3bob
o3bobo3bobo4bo$6bo4bobo3bobo3bobo3bobo4bo2$8b3o3b3o3b3o3b3o3b3o2$8bo4b
o7bo7bo4bo$7bobo3bo7bo7bo3bobo$8bo25bo$13bo7bo7bo$12bobo5bobo5bobo2$
12b3o5b3o5b3o3$12b3o5b3o5b3o2$12bobo5bobo5bobo$13bo7bo7bo2$13bo7bo7bo$
13bo7bo7bo!Edit: of course there's a simple fixed-width stabilization for arbitrary lengths:
Code: Select all
x = 67, y = 44, rule = B3/S23
59bo$12bo11bo11bo11bo10bo$12bo11bo11bo11bo$59bo$12bo11bo11bo11bo9bobo$
11bobo9bobo9bobo9bobo$58b3o$11b3o9b3o9b3o9b3o2$58b3o$11b3o9b3o9b3o9b3o
$58bobo$11bobo9bobo9bobo9bobo9bo$2bo9bo11bo11bo11bo15bo$bobo55bo3bobo$
2bo9bo11bo11bo11bo10bo4bo$12bo11bo11bo11bo$2b3o3b3o3b3o3b3o3b3o3b3o3b
3o3b3o3b3o3b3o3b3o2$o4bobo3bobo3bobo3bobo3bobo3bobo3bobo3bobo3bobo3bob
o4bo$o4bobo3bobo3bobo3bobo3bobo3bobo3bobo3bobo3bobo3bobo4bo$o4bobo3bob
o3bobo3bobo3bobo3bobo3bobo3bobo3bobo3bobo4bo2$2b3o3b3o3b3o3b3o3b3o3b3o
3b3o3b3o3b3o3b3o3b3o4$12bo11bo11bo11bo$2bo9bo11bo11bo11bo10bo4bo$bobo
55bo3bobo$2bo9bo11bo11bo11bo15bo$11bobo9bobo9bobo9bobo9bo$58bobo$11b3o
9b3o9b3o9b3o$58b3o2$11b3o9b3o9b3o9b3o$58b3o$11bobo9bobo9bobo9bobo$12bo
11bo11bo11bo9bobo$59bo$12bo11bo11bo11bo$12bo11bo11bo11bo10bo$59bo!