Tub with tail

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Tub with tail
x = 5, y = 5, rule = B3/S23 bo$obo$bobo$3bo$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C Still life
Pattern type Strict still life
Number of cells 8
Bounding box 5×5
Frequency class 15.8
Discovered by Charles Corderman
Hugh Thompson
Year of discovery 1971

Tub with tail (or twit, originally from the acronym) is an 8-cell still life discovered by Charles Corderman and Hugh Thompson in 1971.[1][2] It is notable for its use in eater 5.

This still life is comprised of the normally stable tub with a normally unstable tail attached.


Tub with tail is the twenty-eighth most common still life in Achim Flammenkamp's census, being less common than very long boat but more common than very long ship.[3] It is also the thirty-seventh most common object on Adam P. Goucher's Catagolue.[4]

Glider synthesis

All strict still lifes with a population of 20 or fewer cells, as well as all oscillators and spaceships with 16 or fewer cells, are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.

Tub with tail(s) family

Tub with two down cis tails
Tub with two up cis tails
Tub with two down trans tails
Tub with two up trans tails
Tub with long tail
Cis-tub with long^3 tail
Cis-tub with long^4 tail
Trans-tub with long^3 tail
Trans-tub with long^4 tail

See also


  1. Dean Hickerson's oscillator stamp collection. Retrieved on June 18, 2009.
  2. Robert Wainwright (June 1971). Lifeline, vol 2.
  3. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  4. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

External links