4-Life (LtL R2,S4,B4)
Posted: December 13th, 2020, 11:50 pm
I am very surprised how little exploration into this rule I could find online, based on how simple it is to describe and how interesting the dynamics are that it produces. I could only find two other mentions of it online, one of which was by Kellie Evans in her thesis where she named it the LtL rule with the most interesting dynamics. I creatively named it 4-life since a cell will live next step if it currently has 4 neighbors.
It has a number of 3c/2 orthogonal ships. All the ones I've found are shown below:
Below are all the oscillators found by myself and others (credited at the bottom):
and I've found a number of still lives, only a few of which occur commonly:
I've also found two exploding patterns, the first of which is somewhat common, and is responsible for making large enough soups rarely stabilize:
EDIT: I found a 4c/61 diagonal spaceship!
My next goals for this rule:
1. Find more non-orthogonal ships
2. Find an orthogonal ship with a speed other than 3c/2o
3. Extend the following list of known oscillator periods:
2,3,4,6,8,9,11,24,28,120
Any contributions would be greatly appreciated! I'll edit this to add anyone's discoveries.
Contributions:
Thanks to Hunting for period 3,4, 6, and 28 oscillators
Thanks to bubblegum for a rake
Thanks for yujh for period 11 and 120 oscillators
(See all below)
It has a number of 3c/2 orthogonal ships. All the ones I've found are shown below:
Code: Select all
x = 89, y = 264, rule = R2,C0,M0,S4..4,B4..4,NM
13b2o26b2o21b2o$b4o8b2o11b2o13b2o21b2o$13b2o11b2o13b2o21b2o$o4bo6bo3b
o9b2o12bo2bo18bo4bo$o4bo10b2o7bo3bo10bo2bo2$62bo4bo4$62bo4bo$63bo2bo$
64b2o9$63b4o$62bo4bo5$58bo4bo2bo4bo$57bo14bo$57bo3bo6bo3bo$60b2o6b2o3$
55bo2bo12bo2bo$55b3o14b3o$55bo18bo2$60bo8bo$60bo8bo2$55bo18bo$55b3o14b
3o$55bo2bo12bo2bo2$58bo12bo$58bo12bo$58bo12bo$58bo12bo16$64b2o$62bo4b
o$64b2o$63bo2bo$64b2o13$46b4o30b4o$46bo2bo30bo2bo$50bo28bo$45bo38bo$52b
o24bo$46bo6b2o20b2o6bo$46bo7bo20bo7bo$47bo6bo20bo6bo$48b2o3b2o20b2o3b
2o$51bo26bo24$49b2o28b2o$48bobo28bobo$46b2o2bo28bo2b2o$46b2o2bo28bo2b
2o$48bo32bo3$54b4o14b4o$57bo14bo$53bo2bo16bo2bo$54b2o18b2o$54b2o18b2o
19$41b4o40b4o$41bo2bo3bobobo24bobobo3bo2bo$41bo3bobo2bo28bo2bobo3bo$41b
o10bo24bo10bo$43bo42bo$44bo5bo28bo5bo$50bo13b2o13bo$63bo2bo$44bo7bo8b
o6bo8bo7bo$46bo13bo8bo13bo2$60bo3b2o3bo$47bo4bo24bo4bo$49b2o28b2o$62b
o4bo3$60bo3b2o3bo2$60bo8bo$61bo6bo$63bo2bo$64b2o5$43b2o40b2o2$46bo36b
o$46bo36bo$41bo46bo$44bo40bo$42b2o42b2o3$44bobo36bobo$42bo4bo34bo4bo$
43bo42bo$43bo19bo2bo19bo$42bo4bo34bo4bo$42bo44bo2$62bo4bo$56b2o14b2o$
56b2o14b2o$62bo4bo$62bo4bo$62bo4bo$62bo4bo$62bo4bo10$52bo2bo18bo2bo3$
52bo24bo$53b2o20b2o$64b2o$64b2o$53b2ob2o14b2ob2o$52bo4bo6b2o6bo4bo$52b
o11b2o11bo$55bo18bo$54b2o18b2o15$64b2o$63bo2bo$62b2o2b2o$63bo2bo$62bo
4bo$60bo8bo$59bob3o2b3obo$58bo2b2o4b2o2bo$59bob3o2b3obo$60bo8bo$62bo4b
o$63bo2bo$62b2o2b2o$63bo2bo$64b2o6$64b2o$63bo2bo$62b2o2b2o$63bo2bo$62b
o4bo$60bo8bo$59bob3o2b3obo$58bo2b2o4b2o2bo$59bob3o2b3obo$60bo8bo$62bo
4bo$63bo2bo$62b2o2b2o$63bo2bo$64b2o!
Code: Select all
x = 207, y = 88, rule = R2,C0,M0,S4..4,B4..4,NM
16bo2bo$13bo8bo$12bo10bo75bo$99bo$99b4o$11bo4bo2bo4bo72b4o$67bo32bo79b
2o$100bo77bo4bo$11bo4bo2bo4bo41bobo108bo6bo$69b2o$65bo69bo2b2o36bo8bo
$5bo2bo14bo42bo68bo3bo36bo8bo$2bo19bo46b2o14b2o48b2o2bo$bo14bo2bo47bo
bo14bo2bo36b3o24bo25bo6bo$83b2o2b2o10bo7bo3bo5bo6bobo23bob3o23bo4bo$82b
o6bo8bobo6bo3bo4bo35b2o26b2o$o4bo2bo4bo68bo6bo8bobo16bobo28b2o$83b2o2b
2o10bo9bo8bo7bob2o6bobo8b3obo$28bo55bo2bo21bo14b2o4bo4bo3bo10bo$o4bo2b
o4bo10bo60b2o37bo4bo6bobo$23bo$24bo$bo10bo16bo$2bo8bo8bo12bo$5bo2bo10b
obo3b3o$24bo2bo$24bo2bo120bo$24b3o3bobo10bo2bo38b2o62bobo$18bo12bo8bo
8bo33bob2obo58bo$22bo16bo10bo94bo7bo$27bo53b2o6b2o55bo$28bo53bo6bo25b
o8b3o7bobo16bo$27bo10bo4bo2bo4bo29b2o6b2o5bo9b3o5b2o7bo7bo3bo3bo6bo7b
o$23bo74bo6bo3bo2bo3bo14bo7bo12bo$83bob2obo6b2o9b2o5b3o10bo7bobo11bob
o$38bo4bo2bo4bo33b2o10bo8bo16b3o25bo3$32bo2bo14bo$29bo19bo$28bo14bo2b
o$195b2o2$27bo4bo2bo4bo152b2o2b2o$64b4o124bo6bo$64bo2bo124bo6bo$27bo4b
o2bo4bo22bob2obo126b2o$63b6o126b2o$64bo2bo14b2o22b2o$28bo10bo21bo8bo9b
o4bo5bobo2bobo5b2o3bo$29bo8bo22bo2bo2bo2bo9bo4bo7bo2bo7bo6b2o$32bo2bo
26b3o2b3o14bo8bo2bo$79bo11bobo2bobo14bo$113bo$78bo25bo5bo$78bo25bo6b2o
$79bo115b2o$62b3o2b3o9b2o3b2o109b2o$61bo2bo2bo2bo121bo6bo$61bo8bo121b
o6bo$64bo2bo125b2o2b2o$63b6o40bo2bo$63bob2obo126b2o$64bo2bo11bo2bo26b
4o$64b4o$79b4o$109b4o2$79b4o26bo2bo2$79bo2bo$201b2o$199bo4bo$198bo6bo
$106b2o3b2o66bo2bo$112bo63bo8bo11bo8bo$79b2o6bo25bo61bo10bo10bo8bo$81b
o5bo25bo$78bo119bo6bo$78bo14bobo2bobo11bo61bo4bo2bo4bo11bo4bo$95bo2bo
8bo93b2o$79b2o6bo7bo2bo7bo4bo$82bo3b2o5bobo2bobo5bo4bo62bo4bo2bo4bo$84b
2o22b2o2$175bo10bo$176bo8bo$179bo2bo!
Code: Select all
x = 43, y = 22, rule = R2,C0,M0,S4..4,B4..4,NM
19bobo4bobo4bobo4b3o$26bo7bo5bobo$bo5bo6bo4b3o5b2o4bobo$obo5b2o2b2o$o
bo5b2o2b2o3$obo5b2o2b2o6b2o2b2o$obo5b2o2b2o7bo2bo7b2o2b2o$bo5bo6bo4b2o
4b2o4b3o2b3o5$9bo2bo$8b2o2b2o$7b2o4b2o3$7b2o4b2o$8b2o2b2o$9bo2bo!Code: Select all
x = 4, y = 4, rule = R2,C0,M0,S4..4,B4..4,NM
b2o$b2o$b2o$o2bo!
Code: Select all
x = 14, y = 2, rule = R2,C0,M0,S4..4,B4..4,NM
2o10b2o$2o10b2o!Code: Select all
x = 15, y = 15, rule = R2,C0,M0,S4..4,B4..4,NM
14bo$12b2o$13b2o$12bo9$bobo$b2o$obo!1. Find more non-orthogonal ships
2. Find an orthogonal ship with a speed other than 3c/2o
3. Extend the following list of known oscillator periods:
2,3,4,6,8,9,11,24,28,120
Any contributions would be greatly appreciated! I'll edit this to add anyone's discoveries.
Contributions:
Thanks to Hunting for period 3,4, 6, and 28 oscillators
Thanks to bubblegum for a rake
Thanks for yujh for period 11 and 120 oscillators
(See all below)