For discussion of specific patterns or specific families of patterns, both newly-discovered and well-known.
gmc_nxtman
Posts: 1150
Joined: May 26th, 2015, 7:20 pm

Herschel to bi-pond:

Code: Select all

``````x = 39, y = 15, rule = LifeHistory
38.A\$36.3A\$35.A\$35.2A2\$32.2A\$31.A.A\$32.A3\$C\$.C\$.2C9.2A\$2C10.2A\$C!
``````
Almost certainly useless, unless a pattern that requires a sacrificial bi-pond is found.

Rhombic
Posts: 1072
Joined: June 1st, 2013, 5:41 pm

gmc_nxtman wrote:Herschel to bi-pond:

Code: Select all

``````x = 39, y = 15, rule = LifeHistory
38.A\$36.3A\$35.A\$35.2A2\$32.2A\$31.A.A\$32.A3\$C\$.C\$.2C9.2A\$2C10.2A\$C!
``````
Almost certainly useless, unless a pattern that requires a sacrificial bi-pond is found.
True, but the traffic lights could also be a bit of a problem. Messing a bit with the bi-pond, I found how an R-pentomino cleanly destroys it, but, again, unless this could form part of a circuit (i.e. the R-pentomino do something if the bi-pond is not there, which most probably isn't the case)... interesting at best. I'll have a look in case gliders can be used, to control a glider stream with a Herschel circuit (and this circuit).

Code: Select all

``````x = 12, y = 8, rule = B3/S23
10bo\$b2o6b2o\$o2bo6b2o\$o2bo\$b2ob2o\$3bo2bo\$3bo2bo\$4b2o!
``````
And sort of on topic, LoM+r-pentomino gives two biponds

Code: Select all

``````x = 13, y = 7, rule = B3/S23
11b2o\$10b2o\$9b2o2\$2o\$b2o\$bo!
``````
EDIT: one of my best attempts with a glider, but requires block and puts a beehive that, on top of that, would react violently if the next glider comes in the same direction... not too useful:

Code: Select all

``````x = 19, y = 14, rule = B3/S23
b2o\$o2bo\$o2bo\$b2ob2o\$3bo2bo3bo\$3bo2bob2o6b2o\$4b2o3b2o5b2o4\$15b2o\$15bob
o\$17bo\$17b2o!
``````
SoL : FreeElectronics : DeadlyEnemies : 6a-ite : Rule X3VI
what is “sesame oil”?

gmc_nxtman
Posts: 1150
Joined: May 26th, 2015, 7:20 pm

Is this near-transparent spartan H-to-G0 known?

Code: Select all

``````#C repeat time 273, can be overclocked
x = 59, y = 38, rule = LifeHistory
7.2A\$8.A\$8.A.A\$9.2A4\$30.2A\$30.2A2\$9.C\$9.C.C\$9.3C\$11.C\$29.2A25.2A\$28.A
2.A24.A\$28.A.A23.A.A\$29.A24.2A\$2.2A\$3.A\$3A\$A4\$18.2A11.D.2A\$13.2A3.2A
9.3D.2A\$13.2A14.D.D\$29.D2\$12.2A\$13.A4.2A35.2A\$10.3A5.2A35.A\$10.A45.3A
\$42.2A14.A\$43.A\$40.3A7.2A\$40.A9.2A!
``````

muzik
Posts: 3925
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Code: Select all

``````x = 53, y = 48, rule = B3/S23
ob2o\$3o\$bo6\$14b3o\$bo\$bo\$bo9\$26b3o\$13bo\$13bo\$13bo9\$38b3o\$25bo\$25bo\$25bo
9\$50b3o\$37bo\$37bo\$37bo!
``````
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!

muzik
Posts: 3925
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

p12, anyone?

Code: Select all

``````x = 6, y = 5, rule = B3/S23
2bobo\$2b2o\$2b2o2\$b2o!
``````
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!

Mr. T
Posts: 211
Joined: March 24th, 2016, 2:55 pm
Location: Germany

The interaction of a c10 p192 lwss backrake with a C2 P24 lwss backrake in combination with two p24 rakes brings a nice selfsimilar effect.

Code: Select all

``````x = 374, y = 282, rule = B3/S23
265b3o3b3o15b3o3b3o\$264bo2bo3bo2bo13bo2bo3bo2bo\$267bo3bo19bo3bo\$267bo
3bo19bo3bo\$264bobo5bobo13bobo5bobo2\$268b3o21b3o\$268b3o21b3o\$267bobobo
19bobobo2\$42bo\$35bo5bobo\$31bo2bo2bo3bob2o215b3o3b2o3b2o3bo7b3o3b2o3b2o
3bo\$29b2obobo3bo3bo216bo2bo4b2ob2o3b3o5bo2bo4b2ob2o3b3o\$27b2ob2o7bo
222bo4b2ob2o2b2obo8bo4b2ob2o2b2obo\$27b2ob2o7bo218bo3bo6bo4b3o5bo3bo6bo
4b3o\$29b2obobo3bo3bo215bo3bo11b3o5bo3bo11b3o\$31bo2bo2bo3bob2o217bo11b
3o9bo11b3o\$35bo5bobo215bobo13b2o6bobo13b2o\$42bo19b3o\$21b3o28b2ob3o4b3o
\$11b2ob3o4b3o25bobo4b3o7bo\$8bobo4b3o7bo23bo2bo4bob2o24b3o\$8bo2bo4bob2o
29bo2bo4bob2o14b2ob3o4b3o\$8bo2bo4bob2o29bobo4b3o7bo5bobo4b3o7bo\$8bobo
4b3o7bo26b2ob3o4b3o7bo2bo4bob2o186bobo21bobo\$11b2ob3o4b3o38b3o7bo2bo4b
ob2o187b2o22b2o\$21b3o48bobo4b3o7bo181bo23bo\$75b2ob3o4b3o247b4o\$85b3o
246b6o\$26bo79b3o225b4ob2o\$29bo66b2ob3o4b3o229b2o\$24bo68bobo4b3o7bo\$23b
2o5b2o31b2o28bo2bo4bob2o244b2o\$22bo8bo31b2o28bo2bo4bob2o243b4o\$24bobo
4bo61bobo4b3o7bo237b2ob2o\$21bo2bo3b3o65b2ob3o4b3o241b2o\$13b3o5b2o2bo
80b3o223bo10bobo\$3b2ob3o4b3o7b3o306bobo7bo2b2o\$obo4b3o7bo6bo307b2o9bob
o\$o2bo4bob2o338b2o\$o2bo4bob2o24b2o30b2o6b2o22b2o246b2ob2o\$obo4b3o7bo
18b2o30b2o6b2o22b2o246b4o\$3b2ob3o4b3o298bo34b2o\$13b3o298bobo17b6o\$218b
4o71b4o17b2o17bo5bo\$87b2o30b2o30b2o30b2o32bo3bo71bo3bo21bo19bo\$87b2o
30b2o30b2o30b2o36bo71bo24b2o13bo4bo\$217bo2bo73bo2bo20bobo14b2o2\$318bo
37b4o\$317b2o36b6o\$318b2o17bo17b4ob2o\$317bo18b2o21b2o\$336bobo\$370b4o\$
369bo3bo\$323b2o8bo2bo36bo\$324b2o11bo17bo9b2o2bo2bo\$323bo9bo3bo16b2o9b
3o\$334b4o16bobo8b2o2bo2bo\$373bo\$330b2o37bo3bo\$329bob2o37b4o\$331b2o15b
2o7b2o\$331b2o13b2ob2o4bo4bo\$328bo13bo3b4o11bo\$327bo3bo5b2o2bobo3b2o6bo
5bo\$322b2obo4b2o4bo2b2o3bo11b6o\$322b2obo6bo4b2o2bobo3b2o\$323bobo3b2o
11bo3b4o\$247b2obo7bo66b2ob2o3bo12b2ob2o\$206b2obo7bo26bo6bo5b3o65bo5bo
16b2o\$203bo6bo5b3o25bo2bo3b2o2bo4bo63bo12b2o\$203bo2bo3b2o2bo4bo25b2o5b
obo4b3o8b2obo7bo43bo3bo5bo4bo\$204b2o5bobo4b3o24b2o5bobo4b3o5bo6bo5b3o
43b3o12bo\$204b2o5bobo4b3o23bo2bo3b2o2bo4bo6bo2bo3b2o2bo4bo51bo5bo\$203b
o2bo3b2o2bo4bo24bo6bo5b3o8b2o5bobo4b3o51b6o\$203bo6bo5b3o28b2obo7bo9b2o
5bobo4b3o\$206b2obo7bo49bo2bo3b2o2bo4bo44b4o\$267bo6bo5b3o44bo3bo\$270b2o
bo7bo19bo29bo\$294bo5bobo24bo2bo\$290bo2bo2bo3bob2o\$288b2obobo3bo3bo\$
248b2o20b2o14b2ob2o7bo\$248b2o20b2o14b2ob2o7bo\$288b2obobo3bo3bo\$290bo2b
o2bo3bob2o\$198b2obo7bo84bo5bobo\$195bo6bo5b3o90bo\$195bo2bo3b2o2bo4bo\$
196b2o5bobo4b3o\$196b2o5bobo4b3o40b2o6b2o22b2o6b2o\$195bo2bo3b2o2bo4bo
41b2o6b2o22b2o6b2o\$195bo6bo5b3o7b2o\$198b2obo7bo8bobo\$218bo\$56b2o214b2o
\$55b2o215b2o\$57bo3\$275b2obo7bo\$272bo6bo5b3o\$272bo2bo3b2o2bo4bo\$273b2o
5bobo4b3o\$33bo239b2o5bobo4b3o\$31b2o239bo2bo3b2o2bo4bo\$32b2o77b3o158bo
6bo5b3o\$101b2ob3o4b3o161b2obo7bo\$98bobo4b3o7bo\$98bo2bo4bob2o\$98bo2bo4b
ob2o\$98bobo4b3o7bo\$101b2ob3o4b3o\$111b3o4\$71b2o30b2o\$71b2o30b2o2\$13b3o\$
3b2ob3o4b3o\$obo4b3o7bo34b2o6b2o22b2o6b2o\$o2bo4bob2o40b2o6b2o22b2o6b2o\$
o2bo4bob2o\$obo4b3o7bo105b2o\$3b2ob3o4b3o107bobo\$13b3o90b3o14bo\$96b2ob3o
4b3o\$93bobo4b3o7bo\$47b2o20b2o8b2o12bo2bo4bob2o\$47b2o20b2o8b2o12bo2bo4b
ob2o137bo\$93bobo4b3o7bo131bobo\$96b2ob3o4b3o133b2o\$106b3o\$85b3o\$75b2ob
3o4b3o\$21b3o48bobo4b3o7bo\$11b2ob3o4b3o38b3o7bo2bo4bob2o\$8bobo4b3o7bo
26b2ob3o4b3o7bo2bo4bob2o73bo\$8bo2bo4bob2o29bobo4b3o7bo5bobo4b3o7bo26bo
39bob2o\$8bo2bo4bob2o29bo2bo4bob2o14b2ob3o4b3o27bob2o26b2ob3o5bob2o\$8bo
bo4b3o7bo23bo2bo4bob2o24b3o16b2ob3o5bob2o24b2o2b2o4bo3b2o21bo\$11b2ob3o
4b3o25bobo4b3o7bo35b2o2b2o4bo3b2o24bo4bo5b2o24bob2o\$21b3o28b2ob3o4b3o
36bo4bo5b2o28bo4bo5b2o13b2ob3o5bob2o\$42bo19b3o36bo4bo5b2o29b2o2b2o4bo
3b2o7b2o2b2o4bo3b2o\$35bo5bobo58b2o2b2o4bo3b2o27b2ob3o5bob2o5bo4bo5b2o\$
31bo2bo2bo3bob2o59b2ob3o5bob2o37bob2o5bo4bo5b2o\$29b2obobo3bo3bo72bob2o
38bo8b2o2b2o4bo3b2o\$27b2ob2o7bo76bo51b2ob3o5bob2o\$27b2ob2o7bo139bob2o
18bo\$29b2obobo3bo3bo137bo19bob2o\$31bo2bo2bo3bob2o144b2ob3o5bob2o\$35bo
5bobo143b2o2b2o4bo3b2o\$42bo99b2o20b2o8b2o10bo4bo5b2o\$142b2o20b2o8b2o
10bo4bo5b2o\$187b2o2b2o4bo3b2o\$108bo80b2ob3o5bob2o\$107bob2o89bob2o71b2o
bo7bo\$96b2ob3o5bob2o90bo70bo6bo5b3o\$94b2o2b2o4bo3b2o162bo2bo3b2o2bo4bo
\$93bo4bo5b2o167b2o5bobo4b3o\$93bo4bo5b2o41b2o6b2o22b2o6b2o84b2o5bobo4b
3o\$94b2o2b2o4bo3b2o37b2o6b2o22b2o6b2o83bo2bo3b2o2bo4bo\$96b2ob3o5bob2o
161bo6bo5b3o\$107bob2o164b2obo7bo\$108bo\$166b2o30b2o\$166b2o30b2o4\$198b2o
bo7bo\$195bo6bo5b3o\$195bo2bo3b2o2bo4bo25b2o9b2obo17b2o6b2o\$196b2o5bobo
4b3o24b2o7b2obo2bo16b2o6b2o\$124b2o70b2o5bobo4b3o33bo5bo\$123b2o70bo2bo
3b2o2bo4bo36bobo2b2o\$125bo69bo6bo5b3o36b2obo3bo46bo\$198b2obo7bo38bobob
obo39bo5bobo\$251b3o36bo2bo2bo3bob2o\$288b2obobo3bo3bo\$232b2o7bobo20b2o
20b2ob2o7bo\$232b2o7b2o21b2o20b2ob2o7bo\$242bo45b2obobo3bo3bo\$290bo2bo2b
o3bob2o\$294bo5bobo\$270b2obo7bo19bo\$267bo6bo5b3o\$206b2obo7bo49bo2bo3b2o
2bo4bo\$203bo6bo5b3o28b2obo7bo9b2o5bobo4b3o\$149bo53bo2bo3b2o2bo4bo24bo
6bo5b3o8b2o5bobo4b3o\$147b2o55b2o5bobo4b3o23bo2bo3b2o2bo4bo6bo2bo3b2o2b
o4bo\$148b2o54b2o5bobo4b3o24b2o5bobo4b3o5bo6bo5b3o\$203bo2bo3b2o2bo4bo
25b2o5bobo4b3o8b2obo7bo\$203bo6bo5b3o25bo2bo3b2o2bo4bo\$206b2obo7bo26bo
6bo5b3o\$247b2obo7bo44\$182b2o\$182b2o\$108bo\$107bob2o\$96b2ob3o5bob2o\$94b
2o2b2o4bo3b2o21b2o30b2o6b2o22b2o\$93bo4bo5b2o25b2o30b2o6b2o22b2o\$93bo4b
o5b2o\$94b2o2b2o4bo3b2o\$96b2ob3o5bob2o11bo78bo\$107bob2o11bo77bob2o\$108b
o21b2o57b2ob3o5bob2o\$129bo2bo54b2o2b2o4bo3b2o\$129bo2bo25b2o26bo4bo5b2o
\$128b2ob2o25b2o26bo4bo5b2o\$129b2o56b2o2b2o4bo3b2o\$189b2ob3o5bob2o\$180b
o19bob2o\$179bob2o18bo\$116bo51b2ob3o5bob2o\$115bob2o38bo8b2o2b2o4bo3b2o\$
104b2ob3o5bob2o37bob2o5bo4bo5b2o\$102b2o2b2o4bo3b2o27b2ob3o5bob2o5bo4bo
5b2o\$101bo4bo5b2o29b2o2b2o4bo3b2o7b2o2b2o4bo3b2o\$101bo4bo5b2o28bo4bo5b
2o13b2ob3o5bob2o\$102b2o2b2o4bo3b2o24bo4bo5b2o24bob2o\$104b2ob3o5bob2o
24b2o2b2o4bo3b2o21bo\$115bob2o26b2ob3o5bob2o\$116bo19b2o18bob2o\$128bo6bo
2bo18bo\$123b3ob2o6bo\$122b3o7b2o2b3o\$121bo3b2o4bo\$121bo3b2o4bo\$122b3o7b
2o2b3o\$123b3ob2o6bo\$128bo6bo2bo\$136b2o!
``````
Christoph Reinthaler (Who has this weird c/10-fetish)

muzik
Posts: 3925
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

A reaction that involves a pi moving a blinker, releasing 2 gliders in the process. New caterpillar confirmed?

Code: Select all

``````x = 11, y = 3, rule = B3/S23
3o\$2bo5b3o\$3o!
``````
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!

Bullet51
Posts: 564
Joined: July 21st, 2014, 4:35 am

muzik wrote:A reaction that involves a pi moving a blinker, releasing 2 gliders in the process. New caterpillar confirmed?

Code: Select all

``````x = 11, y = 3, rule = B3/S23
3o\$2bo5b3o\$3o!
``````
No, because the reaction is not chainable.
Still drifting.

gmc_nxtman
Posts: 1150
Joined: May 26th, 2015, 7:20 pm

H-to-G1 in passing:

Code: Select all

``````x = 66, y = 74, rule = LifeHistory
53.2A\$53.2A2\$53.3D\$54.D\$54.3D8\$47.2A\$47.A\$48.A\$45.3A\$45.A4\$55.2A\$55.
2A7.2A\$7.A56.A\$7.3A5.2A37.D7.A.A\$10.A4.2A36.3D6.2A\$9.2A41.D2.2D2\$18.D
7.D\$10.2A7.D6.D.D\$10.2A3.3D.2D5.3D.2A\$15.D.3D8.D.2A\$15.D.2D\$60.2A\$10.
2A48.A.A\$10.2A50.A\$56.2A4.2A\$56.A\$57.3A\$7.2A.2A47.A\$7.2A.A\$10.A\$10.2A
5.D\$16.3D\$16.D2\$48.2A\$48.A\$49.3A\$51.A3\$24.2A\$24.2A12\$C\$C.C20.2A\$3C20.
A\$2.C10.2A3.2A4.3A\$11.A2.A4.A6.A\$11.3A4.A\$18.2A\$11.2A.A\$11.A.2A!
``````

mollwollfumble
Posts: 14
Joined: July 18th, 2016, 7:48 pm

On the android ap "The game of life" there is a beautiful Methuselah called "coeur" by "Joshua". I don't see it on lifewiki. Is it a variant of some other Methuselah?

It's symmetric, fits in a 7*5 bounding box, is connected, and contains 15 cells.
I don't know how many steps it runs for, but it produces 18 gliders. Partway through the run there are a transitory pair of spaceships.

oooxooo
oxxxxxo
xxoxoxx
oxoxoxo
oooxooo

muzik
Posts: 3925
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Seems worth an article to me.
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!

FlameandFury
Posts: 118
Joined: May 18th, 2016, 10:07 pm

That's almost as good as a Gustavo Ramos Rehermann pattern!

(obvious sarcasm is obvious)
what is sesame oil?

Posts: 1977
Joined: November 8th, 2014, 8:48 pm
Location: Getting a snacker from R-Bee's

mollwollfumble wrote:On the android ap "The game of life" there is a beautiful Methuselah called "coeur" by "Joshua". I don't see it on lifewiki. Is it a variant of some other Methuselah?

It's symmetric, fits in a 7*5 bounding box, is connected, and contains 15 cells.
I don't know how many steps it runs for, but it produces 18 gliders. Partway through the run there are a transitory pair of spaceships.

Code: Select all

``````x = 7, y = 5, rule = B3/S23
3bo\$b5o\$2obob2o\$bobobo\$3bo!
``````
Welcome to the forums!
No, it's not a variant of any other methuselahs. If you want to know more about methuselahs, you can refer to the handy list on the LifeWiki.
"Couer" stabilizes in precisely 5576 generations.
It's rather close in size to 23334M, which has one more column but 3 less cells, and lasts for - you guessed it - 23334 generations, more than 4 times as long.
In general, non-record methuselahs aren't particularly "interesting" (which makes this thread one of the better places to have them).
That was kind of rude, FlameAndFury.
LifeWiki: Like Wikipedia but with more spaceships. [citation needed]

mollwollfumble
Posts: 14
Joined: July 18th, 2016, 7:48 pm

mollwollfumble wrote:On the android ap "The game of life" there is a beautiful Methuselah called "coeur" by "Joshua". I don't see it on lifewiki. Is it a variant of some other Methuselah?

It's symmetric, fits in a 7*5 bounding box, is connected, and contains 15 cells.
I don't know how many steps it runs for, but it produces 18 gliders. Partway through the run there are a transitory pair of spaceships.

Code: Select all

``````x = 7, y = 5, rule = B3/S23
3bo\$b5o\$2obob2o\$bobobo\$3bo!
``````
Welcome to the forums!
No, it's not a variant of any other methuselahs. If you want to know more about methuselahs, you can refer to the handy list on the LifeWiki.
"Couer" stabilizes in precisely 5576 generations.
It's rather close in size to 23334M, which has one more column but 3 less cells, and lasts for - you guessed it - 23334 generations, more than 4 times as long.
In general, non-record methuselahs aren't particularly "interesting" (which makes this thread one of the better places to have them).
That was kind of rude, FlameAndFury.
Possible record for a symmetric Methuselah ?

Posts: 1977
Joined: November 8th, 2014, 8:48 pm
Location: Getting a snacker from R-Bee's

mollwollfumble wrote:
BlinkerSpawn wrote: "Couer" stabilizes in precisely 5576 generations.
Possible record for a symmetric Methuselah ?
I wouldn't know. Asymmetry tends to allow reactions to go on longer, so that's why most of the searches have used asymmetric soups to find methuselahs.
If you want to talk about records, you'd have to play the same game as the rest of us and try to find a reasonable definition of methuselah. Otherwise, I could just put 40514M and its mirror image just far enough away that they still interact and break that record easily.

...possible record for a polyomino? Maybe. Again, I'm not the one to ask.
LifeWiki: Like Wikipedia but with more spaceships. [citation needed]

dvgrn
Moderator
Posts: 7373
Joined: May 17th, 2009, 11:00 pm
Contact:

mollwollfumble wrote:
BlinkerSpawn wrote: "Couer" stabilizes in precisely 5576 generations.
Possible record for a symmetric Methuselah ?
...
...possible record for a polyomino? Maybe. Again, I'm not the one to ask.
To find out, write a script that generates all symmetrical patterns, or all symmetrical polyominoes, that fit inside 5x7, and runs them all to see when they stabilize, and keeps track of the longest-running one.

Takes all the fun out of guessing, I know... but it actually wouldn't take very long to run that exhaustive search. I would guess that there's something in that space that lasts longer than 5776 ticks.

However, this seems like a rather strange artificially restricted search space, so I'm not likely to be curious enough about that particular record to write the script myself.

simeks
Posts: 369
Joined: March 11th, 2015, 12:03 pm
Location: Sweden

dvgrn wrote:To find out, write a script that generates all symmetrical patterns, or all symmetrical polyominoes, that fit inside 5x7, and runs them all to see when they stabilize, and keeps track of the longest-running one.
Well, since I already pretty much had the code to try this...

Turns out that pattern is in fact the longest running methuselah with bounding box 5×7 and symmetry on that axis.

This is the form with lowest population (11 cells, 5574 gens):

Code: Select all

``````x = 7, y = 5, rule = LifeHistory
2.A.A\$.A3.A\$.2A.2A\$A5.A\$3.A!
``````
This is the second best one (19 cells, 5012 gens)::

Code: Select all

``````x = 7, y = 5, rule = LifeHistory
7A\$2A.A.2A\$2.3A\$A5.A\$.A3.A!
``````

FlameandFury
Posts: 118
Joined: May 18th, 2016, 10:07 pm

BlinkerSpawn wrote: That was kind of rude, FlameAndFury.
Sorry ._. It doesn't break any big records, but the definition of methuselahs are very arbitrary.
what is sesame oil?

testitemqlstudop
Posts: 1367
Joined: July 21st, 2016, 11:45 am
Location: in catagolue
Contact:

A new spaceship in Live Free Or Die:

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```#CXRLE Pos=-48,-4 Gen=48 x = 9, y = 6, rule = B2/S0 3bo4bo\$2bob2o\$o\$o\$2bob2o\$3bo4bo!```
Note: This may seem oddly similar to the free ship: http://lfod.wikispaces.com/free+ship but at no generation is it equal to the free ship.

muzik
Posts: 3925
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!

M. I. Wright
Posts: 372
Joined: June 13th, 2015, 12:04 pm

Also, for the record, it's unfortunately not new -
testitemqlstudop wrote:Note: This may seem oddly similar to the free ship: http://lfod.wikispaces.com/free+ship but at no generation is it equal to the free ship.
The generation you posted is the the exact same as the image in the LFOD wiki.

For future reference, you can search all known gliders/spaceships in a rule using David Eppstein's glider database; the free ship is referred to as Glider 7171 in LFOD's list.
Last edited by M. I. Wright on July 21st, 2016, 6:46 pm, edited 2 times in total.
gamer54657 wrote:God save us all.
God save humanity.

hgkhjfgh
nutshelltlifeDiscord 'Conwaylife Lounge'

testitemqlstudop
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Oh.. whoops. Sorry!

testitemqlstudop
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The mess when a glider collides with a blinker (only in some cases) make more gliders, and those gliders can hit more blinkers, and the gliders created by those collisions can hit even more blinkers, and you pretty much end up with a methuselah of over one billion generations. However, why is this method for finding methuselahs extremely difficult? ( Apparently the most recent methuselah found using this method is 40514M, stimulated with only gliders and blinkers. I can't find any other.)

mollwollfumble
Posts: 14
Joined: July 18th, 2016, 7:48 pm

simeks wrote:
dvgrn wrote:To find out, write a script that generates all symmetrical patterns, or all symmetrical polyominoes, that fit inside 5x7, and runs them all to see when they stabilize, and keeps track of the longest-running one.
Well, since I already pretty much had the code to try this...

Turns out that pattern is in fact the longest running methuselah with bounding box 5×7 and symmetry on that axis.

This is the form with lowest population (11 cells, 5574 gens):

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``````x = 7, y = 5, rule = LifeHistory
2.A.A\$.A3.A\$.2A.2A\$A5.A\$3.A!
``````
This is the second best one (19 cells, 5012 gens)::

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``````x = 7, y = 5, rule = LifeHistory
7A\$2A.A.2A\$2.3A\$A5.A\$.A3.A!
``````
As a newbie three further questions.
1. Worthwhile putting on lifewiki or not?
2. How to understand 2.A.A\$.A3.A\$.2A.2A\$A5.A\$3.A!
3. Want fast software to run life, access to source code and must have automatic backgrounding of period 2 oscillators. Prefer Fortran but can live with C.

mniemiec
Posts: 1205
Joined: June 1st, 2013, 12:00 am

mollwollfumble wrote:As a newbie three further questions.
1. Worthwhile putting on lifewiki or not?
2. How to understand 2.A.A\$.A3.A\$.2A.2A\$A5.A\$3.A!
3. Want fast software to run life, access to source code and must have automatic backgrounding of period 2 oscillators. Prefer Fortran but can live with C.
1. As methuselahs are very easy to find and create, I would think probably not.
3. Golly is probably the best choice currently available for multiple platforms. It doesn't treat P2 oscillators specially, but it doesn't need to; with its QuickLife algorithm, there is zero performance difference between still-lifes and P2 oscillators. If you run with a step increment that is even, you will not see them move either.
2. This is RLE code, that is the de-facto standard text interchange format for Life patterns. RLE files consist of any number of comment lines beginning with '#', a header line, and a stream of data runs ending with '!'. Each run consists of an optional repeat count (default=1) followed by a character that indicates what kind of run. For normal RLE files, these are 'b' for blank (dead) cells, 'o' for living cells, and '\$' for newlines; any unrecognized symbols should be treated as alive for compatibility purposes. Spaces and newlines are ignored, but lines should not exceed 70 characters for compatibility with old email programs. Golly supports custom rule fileS (e.g. in this case, LifeHistory), in which case '.' means dead cell, 'A' means living cell of state #1, 'B' of state #2, etc. So the above pattern would look like:

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``````..O.O
.O...O
.OO.OO
O.....O
...O
``````