O quad-loaf

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O quad-loaf
x = 10, y = 10, rule = B3/S23 5bo$4bobo$3bo2bo$2bob2ob2o$bobo2bo2bo$o2bo2bobo$b2ob2obo$3bo2bo$3bobo$ 4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]] [[ ZOOM 30 ]]
Pattern type Strict still life
Number of cells 28
Bounding box 10 × 10
Frequency class 23.6
Discovered by Unknown
Year of discovery Unknown

O quad-loaf (or quad-loaf, or tetraloaf I, or bi-loaf tie bi-loaf) is a 28-cell still life composed of a tie of four loaves, and usually forms in a constellation with two half-bakeries as a result of two bakeries.


See also: List of common still lifes, Large natural still lifes

O quad-loaf is the 149th most common still life on Adam P. Goucher's Catagolue, being less common than bookend siamese shillelagh but more common than sidewalk. It is the most common still life with 28 cells, being 760 times as common as the next most common, xs28_0caab96z321311d96.[1]

Glider synthesis

All strict still lifes with a population of 21 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.

While obviously much bigger than 20 cells, its method of occurrence makes it simple to synthesise.

See also

External links


  1. Adam P. Goucher. "Statistics". Catagolue. Retrieved on May 28, 2023.