Eater with head feather

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Eater with head feather
x = 7, y = 5, rule = B3/S23 2o$o2b2o$bobobo$2bo2bo$5b2o! #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 7 × 5
Frequency class 27.7
Static symmetry Unspecified
Discovered by Robert Wainwright
Everett Boyer
Year of discovery 1973

The eater with head feather is a 12-cell still life.

Construction

A 6-glider synthesis for this still life was found in January 2020.[1] A 5-glider synthesis was found and submitted to Catagolue by Carson Cheng[2] in April 2022.[3]

Several known alternate syntheses for this still life can be found in Mark Niemiec's database.[4]

x = 18, y = 19, rule = B3/S23 2bo$obo$b2o2$9bobo3bobo$9b2o4b2o$10bo5bo3$2o$b2o$o5$3bo$3b2o$2bobo! #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 23 PAUSE 2 LOOP 24 ]]
A 5G synthesis[5]
(click above to open LifeViewer)
x = 39, y = 33, rule = B3/S23 10bo$10bobo$10b2o17$14b2o$13b2o$15bo2$3o$2bo$bo4$36b2o$6b2o4b2o22bobo$6bobo2b2o23bo$6bo6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 8 X -10 Y 0 AUTOSTART GPS 12 T 0 PAUSE 3 T 33 PAUSE 1 T 86 PAUSE 2 LOOP 87 ]]
A 6G synthesis[1]
(click above to open LifeViewer)

Occurrence

Among the 121 still lifes with 12 cells, this is the 41st most common still life according to Catagolue.

There are no occurrences of eater with head feather in final patterns of collisions in octohash, octo3obj or octo3g databases.

See also

References

  1. 1.0 1.1 Ian07 (January 4, 2020). Re: Soup-based syntheses (discussion thread) at the ConwayLife.com forums
  2. Carson Cheng (July 15, 2022). Message in #cgol on the Conwaylife Lounge Discord server
  3. shinjuku (#2351962839) (April 19, 2022). Job triggered by Adam P. Goucher at GitLab Catagolue project. Retrieved on May 13, 2022.
  4. The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 12/12-93.rle)
  5. xs12_178c2ko at Adam P. Goucher's Catagolue

External links