Long hook with tail

Long hook with tail
x = 6, y = 4, rule = B3/S23 3bo$obobo$2o2bo$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	9
Bounding box	6 × 4
Frequency class	23.1
Static symmetry	Unspecified
Discovered by	Robert Wainwright
Year of discovery	1972
Rules Outer-totalistic rules B/S23 – B35678/S012345678 # of rules 212 = 4096 Isotropic rules B/S2-i3nr – B2ikn34-ajnr5678/S012345678
Glider synthesis Fewest gliders 5 Catagolue-generated RLE synthesis Uploaded synthesis RLE longhookwithtail_synth.rle
Pattern files Plaintext longhookwithtail.cells RLE longhookwithtail.rle
Identifiers apgcode xs9_178426 Niemiec ID 9.8 Pentadecathlon ID 9.8

Long hook with tail is a 9-cell still life. It is the long version of a hook with tail. It is used in an alternate form of the tub-with-tail eater that allows the compression of Herschel loop oscillators to periods of 57, 58, 59, and 60. It was found by Robert Wainwright in 1972, and was one of the last 9-bit still lifes to be reported.

Commonness

It is the 129th most common still life on Adam P. Goucher's Catagolue. Of the ten 9-cell still lifes, it is the second rarest.

Catalysis

Long hook with tail can sometimes be used as a block catalyst. Since it is a rock during catalysis, it can be used when the block catalysis fails because of junk that interacts the block as it is undergoing a catalysis. An example can be seen in a high-clearance variant of the eater 5. For more of the usage of this catalyst and other block-replacement catalysts, see Tutorials/Catalyses#Block_replacements.

x = 10, y = 6, rule = B3/S23 3bo3b2o$2bobo3bo$bobo3bo$bo4bo$2o5b3o$9bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ]] A variation of the tub-with-tail eater using a long hook with tail (click above to open LifeViewer) RLE: here Plaintext: here Glider synthesis All strict still lifes with a population of 22 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right. See also Hook with tail family References External links Long hook with tail at Adam P. Goucher's Catagolue The 10 nine-bit still-lifes at Mark D. Niemiec's Life Page