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rattlesnake

Difficult: Construct a sawtooth with a non-integer expansion factor.

rattlesnake

A truly massive period-384 Cordership: x = 251, y = 232, rule = B3/S23 97bo$34bobo58b2ob2o$34bobobo7bo50bo$33bo2b2obo4b3o65b2o$34b2o3bobob2o bo64bo2bo$34b2o3b2ob5o3b3o45b2o11b2ob2o$38bob2o3b2o3bobo44bo2bo11bo$37b obo44bo11b2o3bo10b3o$83b3o10bo4bo19b2o$96bo3bo20b2o$83b3o11bo2bo$50bo bo31b2ob2o9bo$50b...

rattlesnake

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x = 39, y = 21, rule = B3/S23
4b2o$4b2o4$35b2o$35bo$2o31bobo$2o31b2o$28b2o$28bobo$29bo6$35b2o$25bo9b
o$25b2o9b3o$24bobo11bo!

A way to reflect a gilder wile using up a boat and making a block. Is this known?

rattlesnake

Any way to synthesize this 3-color boat?

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x = 3, y = 3, rule = QuadLife
2A$C.B$.B!

Possible idea:

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#C [[ PASTET 40 PASTE .2B$B2.B$.B$.B$2.2B! 5 3 PASTET 80 PASTE .B$B.2B$B3.B$.B2.B! 0 8 ]]
x = 6, y = 9, rule = QuadLife
.A$2.A$2CA4$4.A$3.CA$3.C.A!

rattlesnake

My nomination: Much smaller (34,7)c/156 spaceship

WhiteHawk wrote: ↑
March 28th, 2025, 5:49 am
Has anyone nominated the proof that every finite phoenix in life has to have period 2?
...

I feel like this proof is not a pattern.

rattlesnake

800/(9*pi^pi) (roughly 2.437839, larger by 8.55941e-5

rattlesnake

Is there a spacefiller in Day and Night?

rattlesnake

From https://conwaylife.com/wiki/Oblique_spaceship: In December 2014, Brett Berger constructed the first fast oblique spaceship in Conway's Game of Life, the waterbear, moving at a velocity of (23,5)c/79. It has a bounding box very slightly smaller than the parallel HBK. With a period of 158, it is ...

rattlesnake

c/11o (slower by 0.00337c)

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x = 4, y = 1, rule = B2-ai3-aen4acijnr5cinqy6cen7c/S02i3jny4qw5nry6e
2obo!

rattlesnake

SKOP 115 Improved: 92P115 x = 25, y = 28, rule = B3/S23 4bo$4b3o5bo$7bo4bo$6b2o4bo2$18b2o$2b2o14bo$2bo13bobo$4bo11b2o$3b2o6bo $2bo6b3o$bob2o4bobo$o2bobo5bo$2o2bo2$15b2ob2o$8b2o5b2obobo$9bo8bobo$6b 3o6b2o3b2ob2o$6bo7bo2b2o5bo$14b2o3b2o$16b2obo$16bo2b4o$17bobo3bo$16b2o bob2o$18bobo$18bobo$19bo! xp115_...

rattlesnake

For 9x9:
Improved to 288 (probably can be improved)

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x = 9, y = 9, rule = B3/S23:T9,9
3bo4bo$o5bobo$8bo$o4b2obo$3bo3bo$3b2o2b2o$3ob2o$2bo$b2o4b2o!

rattlesnake

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rattlesnake

unname4798 wrote: ↑
August 6th, 2024, 12:02 am
how about a number of 4-glider collisions

Still infinite.

rattlesnake

339P7H1V0 has an error (the pattern doesn't show).

rattlesnake

Blocker has blunding box 10x6 but the page says 10x5.

rattlesnake

Who chooses the featured article for each week?

rattlesnake

Oscillator should have an update for SKOP 122 (currently says 118 cells, but this is 102 cells): x = 55, y = 44, rule = B3/S23 25bo$25b3o$28bo$27b2o5$39bo$38bobo$12bo26bo$12b3o$15bo$14b2o$9b2o20b2o $9bo22bob2o17b2o$7bobo26bo16bo$6bobo27bo14bobo$2b2o3bo26b3o9b2o3b2o$2b 2o42b2o5$7b2o42b2o$2b2o3b2o9b3...

rattlesnake

https://conwaylife.com/patterns/eater2variant2.rle and https://conwaylife.com/patterns/eater2variant2.cells look like: #C [[ GRID VIEWONLY ]] x = 5, y = 10, rule = B3/S23 2o$bo$bo$2ob2o$3b2o2$2ob2o$bobo$bobo$2bo! It should be #C [[ GRID VIEWONLY ]] x = 5, y = 9, rule = B3/S23 2o$bo$bob2o$2ob2o2$2ob2...

rattlesnake

I think it is the tumbler (p14).

rattlesnake

A3:

Code: Select all

x = 8, y = 6, rule = pridelife
2C$C$.C2B.2A$3.B.A.D$3.B.A.D$2.2B.2A!

rattlesnake

64P504

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x = 47, y = 20, rule = B3/S23
31bo$29b3o6b2o3bo$28bo9bobobobo$28b2o10bob2o$5b2o32bobo$6bo32bobob3o$
6bobo31b2obo2bo$7b2o36b2o$25bo$23b2ob2o$23bo2bo$24b2o2$4b2o$2bob2o$bo
$4bo32bo$2obo34b2o$2o34b2o$38bo!

rattlesnake

What is the smallest negative spaceship in zebra stripes agar that travels against the grain at 2c/3?
I think I remember seeing an asymmetrical one that is quite small.

rattlesnake

OCA:Diamoeba is not a self-complementary rule (it has no B4 or S4) but it is in Category:Self-complementary_rules . (still in there after purging Category:Self-complementary_rules ) EDIT by dvgrn: Removed the category. The no-still-lifes proof was correct but much more convoluted than necessary, so...

rattlesnake

I'm pretty sure you can use two high-period glider guns to create glider collisions that result in sparks.

rattlesnake

Why does the CC semi-Snark use a boat instead of a tub? Is it because the boat is easier to synthesise (2G for boat vs 3G for tub)?

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