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## Find c/4 rakes and puffers?

For general discussion about Conway's Game of Life.

### Re: Find c/4 rakes and puffers?

I don’t know how, but it’s proven they don’t exist.
Welcome to the forums by the way!
I’d recommend asking questions here.
c(>^w^<c)~*
This is Fluffy the cat.
Fluffy wants to discover new things that everyone likes.
Fluffy thinks about engineering replicators.
Fluffy likes to watch spaceship guns in Golly.
Fluffy knows Natsuki best girl.

Redstoneboi

Posts: 332
Joined: May 14th, 2018, 3:57 am

### Re: Find c/4 rakes and puffers?

Redstoneboi wrote:I don’t know how, but it’s proven they don’t exist.

Must be a flaw in the proof, then. See the Life status page on the Life Wiki to see what's known and what isn't. Are you looking for orthogonal or diagonal c/4? There's a diagonal c/4 sideways rake in Golly's pattern collection -- Patterns/Life/Rakes/c4-sideways-rake.rle.

The first place to hunt for specific examples is Jason Summers' jslife collection.

dvgrn
Moderator

Posts: 5570
Joined: May 17th, 2009, 11:00 pm
Location: Madison, WI

### Re: Find c/4 rakes and puffers?

Wait, I was looking at c/4 orthogonal puffers, those don’t exist, But c/4 diagonal does. Sorry.
Have a good time here!
c(>^w^<c)~*
This is Fluffy the cat.
Fluffy wants to discover new things that everyone likes.
Fluffy thinks about engineering replicators.
Fluffy likes to watch spaceship guns in Golly.
Fluffy knows Natsuki best girl.

Redstoneboi

Posts: 332
Joined: May 14th, 2018, 3:57 am

### Re: Find c/4 rakes and puffers?

Redstoneboi wrote:Wait, I was looking at c/4 orthogonal puffers, those don’t exist...

Where are you looking, exactly? c/4 orthogonal puffers and rakes certainly do exist, for all periods 120 and above, and a scattering of periods below that. They're actually quite a bit easier to construct than c/4 diagonal ones.

`#C p104 c/4 rake based on p936 glider/negative-glider loopx = 197, y = 176, rule = B3/S23131bo3bo\$129b9o2\$132bobo\$129b2obobob2o\$62bobobo\$61b7o62bobobobo\$61bo5bo61bo2bobo2bo\$62bo3bo63bobobobo\$62bo3bo60b2obobobobob2o\$60b2o5b2o57b2o2bobobobo2b2o\$62bo3bo62b2obobob2o\$60b2obobob2o57bo3bobobobo3bo\$59bobobobobobo56bo5bobo5bo\$57b3obobobobob3o60bobo\$57b2o2bobobobo2b2o56bo9bo\$57b2ob2obobob2ob2o56b2ob5ob2o\$60b2obobob2o58bobobo3bobobo\$63bobo61bob3o3b3obo\$126bob2o7b2obo\$59b2obo3bob2o57b4o5b4o\$58bobob5obobo57b2o2bobo2b2o\$58bo5bo5bo57bo2b2ob2o2bo\$57b2o3bo3bo3b2o56bo2bo3bo2bo\$57bo4bo3bo4bo56bob7obo\$61bo5bo62bo5bo\$63bobo64b2o3b2o25bobobo\$58b2ob3ob3ob2o61b3o26b7o\$58b2o9b2o61b3o26bo5bo\$61bob3obo58bo13bo21bo3bo\$64bo61bo13bo21bo3bo\$30b2obob2o24b7o57bobob3o3b3obobo18b2o5b2o\$30bo2bo2bo93bob3obo25bo3bo\$30bo2bo2bo26bobo63bo2bobo2bo22b2obobob2o\$30b2o3b2o27bo66b2ob2o23bobobobobobo\$31bo3bo20b3o2bo5bo2b3o58b5o21b3obobobobob3o\$30b2o3b2o20bo2b9o2bo85b2o2bobobobo2b2o\$31bo3bo23bo3bobo3bo58b2o7b2o18b2ob2obobob2ob2o\$29b2obobob2o23bo5bo59bobo2bobo2bobo20b2obobob2o\$28bobobobobobo22bo5bo59bo2b3ob3o2bo23bobo\$26bobobobobobobobo21bo3bo60b5o3b5o\$25bo4bobobobo4bo21b3o61bobo7bobo19b2obo3bob2o\$26b2o4bobo4b2o18b2o7b2o55bob3o7b3obo16bobob5obobo\$28b3obobob3o19bobo2bobo2bobo53bo4bo3bo3bo4bo15bo5bo5bo\$31bo3bo21b2o4bobo4b2o53bob3o3bo3b3obo15b2o3bo3bo3b2o\$57b2o4bobo4b2o53bo3bo2bobo2bo3bo15bo4bo3bo4bo\$28b2obobobob2o87bo3bo5bo3bo20bo5bo\$27bobobobobobobo17b2ob2o5b2ob2o54bo4b5o4bo22bobo\$27bo2b2obob2o2bo15b2o4bo5bo4b2o57bo3bo22b2ob3ob3ob2o\$26b2o4bobo4b2o14b3o2b2ob3ob2o2b3o53bo3b2ob2o3bo18b2o9b2o\$26b2o2b2o3b2o2b2o15bobob2o2bo2b2obobo54bo2bo5bo2bo21bob3obo\$31bo3bo20b2o3bo5bo3b2o54bo3b5o3bo24bo\$29b2obobob2o23b7o60bo9bo22b7o\$27b3ob2ob2ob3o21bo5bo58b2o4b3o4b2o\$27b2obo5bob2o21b3ob3o58b15o22bobo\$32b3o22b3obo5bob3o56bo3bobo3bo25bo\$30bo5bo21b2o2b5o2b2o56b2o2bo3bo2b2o16b3o2bo5bo2b3o\$31b5o21bobo2bo3bo2bobo53bo2bob2o3b2obo2bo15bo2b9o2bo\$57bo3bo5bo3bo52bobo2bo7bo2bobo16bo3bobo3bo\$33bo23bo2b2o5b2o2bo52bobob2o7b2obobo18bo5bo\$26bo6bo6bo16bo13bo53b3o11b3o19bo5bo\$25b3ob2o5b2ob3o16b2ob3ob3ob2o55b2o11b2o21bo3bo\$25b2ob3obobob3ob2o14b2obob2o3b2obob2o54bo11bo23b3o\$32bobo20bobo13bobo53b2o3b3o3b2o19b2o7b2o\$29bobo3bobo17bo3b2o7b2o3bo54bo4bo4bo19bobo2bobo2bobo\$30b2o3b2o88b2o13b2o15b2o4bobo4b2o\$31b5o20bo2bo9bo2bo52b2ob3o5b3ob2o15b2o4bobo4b2o\$32b3o29bo61bo2bo2b3o2bo2bo\$28b2o2bobo2b2o19b2o3b3o3b2o56bo11bo17b2ob2o5b2ob2o\$26b2obo7bob2o16bobo3b3o3bobo54bo3b2o3b2o3bo14b2o4bo5bo4b2o\$31b2ob2o20b2obo9bob2o54bo5bo5bo15b3o2b2ob3ob2o2b3o\$26b2o11b2o18b3o2bo2b3o59bobo3bobo18bobob2o2bo2b2obobo\$28bo9bo17b2o2b2o2bo2b2o2b2o58bo3bo20b2o3bo5bo3b2o\$25b2o2b2o5b2o2b2o15b2o2b7o2b2o56b2o2bobo2b2o22b7o\$24bo2b2o4bo4b2o2bo14b2o11b2o55bobo2bobo2bobo21bo5bo\$28bo3b3o3bo23b2ob2o61bo9bo22b3ob3o\$27b2o3b3o3b2o21bobobobo60b2o3bo3b2o18b3obo5bob3o\$25b2o13b2o17b2ob2ob2ob2o55b2o5bobo5b2o16b2o2b5o2b2o\$29b2ob3ob2o21b5ob5o55b6o5b6o15bobo2bo3bo2bobo\$29bo7bo20bobo7bobo54bob2o9b2obo15bo3bo5bo3bo\$27bo2bo5bo2bo18bo5bo5bo86bo2b2o5b2o2bo\$26bobobo5bobobo17b3o3bo3b3o55b2o3b2ob2o3b2o16bo13bo\$30b7o19bo4bo2bo2bo4bo54bob2obobob2obo18b2ob3ob3ob2o\$26bob4obob4obo14bo4bo7bo4bo52bo2bobo3bobo2bo15b2obob2o3b2obob2o\$25b2o3b2o3b2o3b2o14bo15bo53b2ob3o3b3ob2o14bobo13bobo\$25b3ob2o5b2ob3o17bo9bo59bobo3bobo17bo3b2o7b2o3bo\$26bobo9bobo16b3ob3ob3ob3o53bob3o3bo3b3obo\$25bo2bobobobobobo2bo16bobo2bobo2bobo53b2o2b2ob5ob2o2b2o13bo2bo9bo2bo\$25b2obobobobobobob2o15bo5bobo5bo32b3o7b3o10bobob5obobo24bo\$24bobobobo5bobobobo14b2obob2ob2obob2o55bob2o5b2obo18b2o3b3o3b2o\$25bo15bo20b2ob2o37bo2bo5bo2bo9bo2bo7bo2bo16bobo3b3o3bobo\$28b2o7b2o16b4o3bobobo3b4o30bo11bo15b3o21b2obo9bob2o\$55b2o5bo3bo5b2o8bo9bo12b2o7b2o16b3o7bo6bo9b3o2bo2b3o\$27b2o3b3o3b2o17b2o11b2o10bo9bo13bob2ob2obo17b3o6b3o5bo6b2o2b2o2bo2b2o2b2o\$27b2o9b2o17b2obob5obob2o9bobo7bobo9b2ob2obobob2ob2o23b3o4bobo6b2o2b7o2b2o\$25b2ob2o2bobo2b2ob2o17b3o2bo2b3o31b2obo2bobobobo2bob2o37b2o11b2o\$25b2obo3bobo3bob2o21bobo15bobo7bobo10bo2bobobobo2bo26b2obo15b2ob2o\$28bobo5bobo15b3o5bo3bo15b3o5b3o7bo3bobo2bobo2bobo3bo25bob2o11bobobobo\$25b2o13b2o5b3o13bobo15bo3b2ob2o3bo7b4obobo3bobob4o15b2o5bo3bobobo8b2ob2ob2ob2o\$28b11o9bo5bobo7bo14b3obo2bobo2bob3o9b2o2bobo2b2o15b2obo2bo4bo3bo2b3o7b5ob5o\$26b2o2bo5bo2b2o12bo25bobo2bobobobo2bobo9bo3bobo3bo6bo5bo2b2o2bobo8b2obo8bobo7bobo\$31b2ob2o14bobo10b3o12bo2bob2obobob2obo2bo23bobo13bo6b2ob2o10bo5bo5bo\$29b2o5b2o10b2obo2bo7bo3bo11b2obobo2bobo2bobob2o8bo4bo4bo8bo3bo4bo15bo8b3o3bo3b3o\$28bo9bo7bo2bob2o9bo3bo4b2o5b4obob2ob2obob4o9b2obobob2o5b2o11bo15b2obo3bo4bo2bo2bo4bo\$27bo4bobo4bo6bo4b2o9bo3bo3bo2bo5b2o2b4ob4o2b2o30bo6bo13b2o3bo2bo4bo7bo4bo\$27bobob5obobo8bo5bo8b3o4bo2b2o7b2o7b2o31bo23bo7bo15bo\$26b2obo7bob2o9b3o16bo2b2o13bo59bo3bo7bo9bo\$26b4o2b3o2b4o6b3o19b4o10bo3bo3bo56bo2bo5b3ob3ob3ob3o\$30bo5bo9b3o34bo3bo3bo56bo9bobo2bobo2bobo\$24b2o15b2o3bo2b2o99b2o5bo5bobo5bo\$49bo107b2obob2ob2obob2o\$26bob2obo3bob2obo8b2o99b2o10b2ob2o\$26bo3b3ob3o3bo8b2o100bo3b4o3bobobo3b4o\$29b2obobob2o8b3o106b2o5bo3bo5b2o8bo9bo\$26bo3bobobobo3bo110b2o4b2o11b2o10bo9bo\$26b2o2bo5bo2b2o116b2obob5obob2o9bobo7bobo\$28bo9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[[ TRACK 0 -1/4 AUTOSTART ]]`

dvgrn
Moderator

Posts: 5570
Joined: May 17th, 2009, 11:00 pm
Location: Madison, WI

### Re: Find c/4 rakes and puffers?

Maybe Redstoneboi was thinking of c/4 period 4 puffers, which cannot exist?

Also, the OP seems somewhat spammy to me, though the common red flags like links in their signature aren't present.

77topaz

Posts: 1345
Joined: January 12th, 2018, 9:19 pm

### Re: Find c/4 rakes and puffers?

Ok, I'm definitely looking at outdated lists.
c(>^w^<c)~*
This is Fluffy the cat.
Fluffy wants to discover new things that everyone likes.
Fluffy thinks about engineering replicators.
Fluffy likes to watch spaceship guns in Golly.
Fluffy knows Natsuki best girl.

Redstoneboi

Posts: 332
Joined: May 14th, 2018, 3:57 am

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