Long snake with feather

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Long snake with feather
x = 8, y = 4, rule = B3/S23 6b2o$3b2o2bo$obobobo$2o3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
Pattern type Strict still life
Number of cells 12
Bounding box 8 × 4
Frequency class 32.3
Static symmetry Unspecified
Discovered by Robert Wainwright
Everett Boyer
Year of discovery 1973

Long snake with feather is a 12-cell still life.

Construction

This still life is known to be constructible with 5 gliders.[1] Tanner Jacobi found a 7-glider synthesis on May 21, 2020.[2] A 5-glider synthesis was found on April 15, 2023.[3] Some known syntheses can be found in Mark Niemiec's database.[4]

x = 34, y = 26, rule = B3/S23 19bo$19bobo$19b2o6$7bo$5bobo18b2o3bo$6b2o18bobobobo$29b2o2bo$11b2o7b3o 9b2o$11bobo6bo$11bo9bo$b2o$obo$2bo3$12b2o$11b2o$13bo$bo$b2o$obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 10 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 3 T 15 PAUSE 1 T 16 PAUSE 1 T 28 PAUSE 1 T 29 PAUSE 2 LOOP 30 ]]
A 7G synthesis[1]
(click above to open LifeViewer)
x = 38, y = 19, rule = B3/S23 9bo$10bo13bobo$8b3o13b2o$25bo4$9b3o$9bo20b2o3bo$10bo3b2o14bobobobo$14b obo16b2o2bo$14bo21b2o2$28b2o$28bobo$3o19b3o3bo$2bo9b2o8bo$bo10bobo8bo$ 12bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 10 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 3 T 27 PAUSE 1 T 28 PAUSE 2 LOOP 29 ]]
A 8G synthesis[4]
(click above to open LifeViewer)

Occurrence

See also: List of common still lifes

Among the 121 still lifes with 12 cells, this is the 90th most common still life according to Catagolue.

There are no collisions in octohash, octo3obj or octo3g databases with this still life occurring in the ash.

References

  1. 1.0 1.1 xs12_4ap3z65 at Adam P. Goucher's Catagolue
  2. Tanner Jacobi (May 21, 2020). Message in #cgol on the Conwaylife Lounge Discord server
  3. shinjuku (#4118831750) (April 15, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  4. 4.0 4.1 The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 12/12-94.rle)

External links