Bump
I decided to come back to this rule and try again on the twin ship gun.
First, I found a period doubler that does work for arbitrary-period guns (here the original p17 and Blinkerspawn's p51):
Code: Select all
x = 62, y = 68, rule = B2c3aeny4a5i6i7e/S12a3ejry4etz5y6c8
35bo$35bo2$36bo6$36bobo$37bo$37bo$36bobo8$36b3o$37bo$22bo2bo7b2o$21b6o
6bo$22bo2bo7b2o$13b2o4$35bo$35bo3$37bo$36b3o$36bobo2$35bo3bo$37bo$36b
3o$36b3o$27bo9bo$27bo7bo3bo$25bo$24b3o9bobo$24bobo9b3o$24b3o10bo$23bo
3bo$24b3o$24bobo$24bobo$25bo$25bo$24bobo16b3obo6bob3o$24bobo10bo6bo2b
2ob2ob2o2bo$24b3o9bo6b3obo6bob3o$23bo3bo32b2o$24b3o$24bobo$24b3o$25bo
2$36b3o$37bo$4b3o8b3o15b2o$5b3o2b2o2b3o8bo7bo$4b3o8b3o8bo6b2o$2o!
Second, I found a twin ship synthesis that uses 1 more U than the original, but should be easier to implement in a gun. Plus, the rightmost U could be replaced with a variety of other ships with the same starboard.
Code: Select all
x = 40, y = 40, rule = B2c3aeny4a5i6i7e/S12a3ejry4etz5y6c8
32b3o$33bo2$37b3o$37bobo29$2o$o$2o2$4b2o24bo4bo$4bo25b2o2b2o$4b2o24bo
4bo!
EDIT: At last, a twin ship gun, with period 102:
Code: Select all
x = 219, y = 174, rule = B2c3aeny4a5i6i7e/S12a3ejry4etz5y6c8
119bo$119bo40bo$160bo$116bobo43bo$116b3o42b3o$116bobo42bobo$161b3o$
116b3o41bo3bo$117bo43b3o$161bobo$117bo43bobo$117bo44bo$162bo$117bo43bo
bo$116b3o42bobo$161b3o$116bobo41bo3bo$116b3o42b3o$116bobo42bobo$161b3o
$162bo2$100bo4bo$97b2o3b2o3b2o16bo$96b2o3b4o3b2o7bo7b2o26b2o15b3o8b3o$
97b2o3b2o3b2o9bo6bo28bo7bo8b3o2b2o2b3o$92b2o6bo4bo47b2o6bo8b3o8b3o$
186b2o7$180bo4bo6b2o$98b2o68b2o7b2o3b2o3b2o$102b3o8b3o7bo15b3o27bo6b2o
3b4o3b2o$103b3o2b2o2b3o8b2o15bo27b2o7b2o3b2o3b2o$102b3o8b3o7bo56bo4bo$
144b3o$144bobo2$123bo43bobo$122b3o42b3o$122bobo42bobo$122b3o$121bo3bo
41b3o$122b3o43bo$122bobo$122bobo43bo$123bo44bo$123bo$122bobo43bo$122bo
bo42b3o$122b3o$121bo3bo41bobo$122b3o42b3o$122bobo42bobo$122b3o$123bo
42bo$125bo40bo$125bo13b3o$139bobo3$144b3o$104b2o7bo2bo28bo34b2o$112bo
4bo7b2o7bo12b2o6bo8b3o8b3o$111b2ob2ob2o6bo3bo4b2o12bo7bo8b3o2b2o2b3o$
112bo4bo7b2ob3o3bo12b2o15b3o8b3o$113bo2bo3$156bo$27bo127b3o$27bo127bob
o$155b3o$26bo101bobo23bo3bo$40bo87b3o24b3o$40bo86bo3bo23bobo$128b3o24b
obo$129bo26bo$129bo26bo$24bobo14bobo84b3o24bobo$25bo15b3o83bo3bo23bobo
$25bo15bobo58bo25b3o24b3o$24bobo15bo59bo25bobo23bo3bo$41b3o95b3o13b3o$
42bo97bo14bobo$42bo112b3o25bo$41b3o100b3o9bo26bo$42bo60bobo25bo12bobo
7bo$41bobo59b3o25bo22bo$41b3o58bo3bo74bo$24b3o14bobo59b3o74b3o$25bo78b
o75bobo$104bo$10bo2bo89b3o73bo3bo$9bo4bo7b2o78bo3bo74bo$8b2ob2ob2o6bo
80b3o74b3o$9bo4bo7b2o19bo59bobo74b3o$b2o7bo2bo167bo9bo$24b3o17bo4bo2bo
6bo2bo116bo3bo7bo$24bobo17b2o2b2obo3b2o3bob2o129bo$49bo2bo6bo2bo117bob
o9b3o$65b2o113b3o9bobo$181bo10b3o$104b2o85bo3bo$103b2o10bo4bo71b3o$
106bo5b2o3b2o3b2o68bobo$106b2o3b2o3b4o3b2o67bobo$103b3o6b2o3b2o3b2o69b
o$103b3o9bo4bo6b2o64bo$160b3obo6bob3o4b3o9bobo$161bo2b2ob2ob2o2bo5bobo
9bobo$160b3obo6bob3o16b3o$157b2o32bo3bo$192b3o$192bobo$41b3o148b3o$31b
o10bo13b2o24bo24b2o84bo$31b2o23bo25b2o23bo$31bo24b2o24bo24b2o2$60b2o
24bo24b2o24bo4bo37bo12bo7b3o8b3o$60bo25b2o23bo25b2o2b2o37bo11b2o8b3o2b
2o2b3o$60b2o24bo24b2o24bo4bo50bo7b3o8b3o$217b2o5$40bobo$40b3o7$24bo$
23b3o$2o$8bob2obo7bo$9b4o8b2o$8bob2obo7bo$64b2o$48b3o8b3o$44bo4b3o2b2o
2b3o$23bobo17b2o3b3o8b3o$23b3o14b2o$40b3o3$24bo$23bobo$24bo$41bo$24bo
15b3o$24bo$41bo$24bo16bo$23bobo14b3o$24bo15b3o$41bo$41bo$23b3o$23b2o
15b3o$26bo14bo$26bo3$39bo$39bo!