Hook with two tails

Hook with two tails
x = 6, y = 6, rule = B3/S23 2b2o$2bo$3bo$3obo$o3bo$4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
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Pattern type	Strict still life
Number of cells	12
Bounding box	6 × 6
Frequency class	34.3
Static symmetry	Unspecified
Discovered by	Robert Wainwright Everett Boyer
Year of discovery	1973
Rules Outer-totalistic rules B/S23 – B35678/S012345678 # of rules 212 = 4096 Isotropic rules B/S2aek3cnr – B2ikn34-ajnr5678/S012345678
Glider synthesis Fewest gliders 5 Catagolue-generated RLE synthesis
Pattern files Plaintext hookwithtwotails.cells RLE hookwithtwotails.rle
Identifiers apgcode xs12_ghn84cz1 Niemiec ID 12.119 Pentadecathlon ID 12.82

The hook with two tails is a 12-cell still life.

Construction

This still life is known to be constructible with 5 gliders. A 6-glider synthesis was found in March 2023, quickly followed by a 5-glider synthesis. Some alternate syntheses can be found in Mark Niemiec's database.

x = 41, y = 29, rule = B3/S23 17bo$16bo$16b3o7$35b2o$36bo3bo$36bob3o$37bo$38bo$20b3o14b2o$20bo$21bo 2$6b3o$8bo$7bo$bo$b2o$obo3$5bo$5b2o$4bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 49 PAUSE 2 LOOP 50 ]] A 5G synthesis (click above to open LifeViewer)

x = 65, y = 49, rule = B3/S23 bo$2bo$3o14$20bobo$21b2o25bo$21bo26bobo8b2o$48b2o10bo3bo$60bob3o$61bo$ 62bo$61b2o2$37b2o$36b2o$38bo3$33b3o$33bo$34bo14$53bo$52b2o$52bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 450 THEME Book ZOOM 10 X 6 Y 6 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 177 PAUSE 2 LOOP 178 ]] A 6G synthesis (click above to open LifeViewer)

x = 39, y = 53, rule = B3/S23 37bo$36bo$36b3o11$18bo$18bobo$18b2o8$bo23bo$2bo22bobo$3o22b2o7$31b2o$ 32bo3bo$32bob3o$33bo$34bo$33b2o2$18bo$3b2o12b2o$2bobo12bobo$4bo8$19b2o $19bobo$19bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 580 THEME Book ZOOM 10 X -4 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 40 PAUSE 1 T 106 PAUSE 2 LOOP 107 ]] A 7G synthesis (click above to open LifeViewer)

x = 37, y = 27, rule = B3/S23 10bo$8bobo$9b2o6$9b2o20b2o$obo7bo21bo3bo$b2o7bob2o18bob3o$bo9bo2bo11b 2o5bo$12b2o11b2o7bo$27bo5b2o7$22b3o$22bo$17b2o4bo$16b2o$3b2o13bo$2bobo $4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 380 THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 37 PAUSE 2 LOOP 38 ]] A 6G conversion from beehive with tail (click above to open LifeViewer)

Occurrence

See also: List of common still lifes, List of still lifes with 12 cells

Among the 121 still lifes with 12 cells, this is the 109th most common (i.e. 13th rarest) still life according to Catagolue.

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

See also

• Hook with tail

External links

• Hook with two tails at Adam P. Goucher's Catagolue
• 12.82 at Heinrich Koenig's Game of Life Object Catalogs