Hooked nine

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Hooked nine
x = 5, y = 5, rule = B3/S23 2o$2bo$2bo$2bobo$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
Pattern type Still life component
Number of cells 8
Bounding box 5 × 5
Static symmetry C1
Discovered by Unknown
Year of discovery Unknown

Hooked nine (or bend nine) is an 8-cell still life component, and an extension of nine by two cells (a domino).

Not all objects which can have nines attached can have hooked nines attached, as hooked nines attach in a fundamentally different way to normal tails. The following are examples of small objects with hooked nines:

twelve loop
(a hook with a hooked nine)
boat with hooked nine

The traditional test tube baby can be interpreted as a hooked nine with a nine.

See also