Hook-with-tail hook siamese snake

Hook-with-tail hook siamese snake
x = 8, y = 4, rule = B3/S23 ob2obo$2ob2obo$6bo$6b2o! #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	4 × 8
Frequency class	33.5
Static symmetry	n (C1)
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/S2-in3jnr – B2ikn34-ajnr5678/S012345678
Glider synthesis Fewest gliders 5 Catagolue-generated RLE synthesis
Pattern files Plaintext hookwithtailhooksiamesesnake.cells RLE hookwithtailhooksiamesesnake.rle
Identifiers apgcode xs12_drz1226 Niemiec ID 12.81 Pentadecathlon ID 12.87

The hook-with-tail hook siamese snake is a 12-cell still life.

Construction

This still life is known to be constructible with 5 gliders. A 7-glider synthesis was found in March 2021. A 5-glider synthesis was found in April 2023. Several known alternate syntheses can be found in Mark Niemiec's database.

x = 39, y = 29, rule = B3/S23 6bo$7bo$5b3o8$20b2o$20bobo8b2o$20bo11bo$32bob2ob2o$33bob2obo2$20b2o$ 19b2o$21bo3$3o$2bo$bo3$5b2o$6b2o$5bo! #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 54 PAUSE 2 LOOP 55 ]] A 5G synthesis (click above to open LifeViewer)

x = 37, y = 47, rule = B3/S23 bo$2bo$3o2$30bo$29bo$29b3o7$18bo$17bo$17b3o4$13bobo10bo$13b2o9b2o$14bo 10b2o2$29b2o$30bo$30bob2ob2o$31bob2obo5$18b2o$17b2o$19bo11$23b2o$23bob o$23bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 500 THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 42 PAUSE 1 T 51 PAUSE 1 T 63 PAUSE 1 T 73 PAUSE 2 LOOP 74 ]] A 7G synthesis (click above to open LifeViewer)

x = 53, y = 44, rule = B3/S23 38bobo$38b2o$39bo10$50bo$13bo36bobo$11bobo25bo10b2o$12b2o25bobo$39b2o 4$2o$bo$bob2ob2o$2bob2obo4$15b2o$14bobo$16bo4$41b3o$41bo$42bo2$2o$b2o$ o2$34b3o$34bo$35bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 500 THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 28 PAUSE 1 T 127 PAUSE 2 LOOP 128 ]] A 8G synthesis (click above to open LifeViewer)

Occurrence

See also: List of common still lifes

Among the 121 still lifes with 12 cells, this is the 102nd most common still life according to Catagolue.

There are no occurrences of this still life in final patterns of collisions in octohash, octo3obj or octo3g databases.

See also

• Hook-with-tail tail siamese snake

External links

• Hook-with-tail hook siamese snake at Adam P. Goucher's Catagolue
• 12.87 at Heinrich Koenig's Game of Life Object Catalogs