Boat tie ship

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Boat tie ship
x = 6, y = 6, rule = B3/S23 2o$obo$b2o$3b2o$3bobo$4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]] [[ ZOOM 42 ]]
Pattern type Strict still life
Number of cells 11
Bounding box 6 × 6
Frequency class 15.2
Discovered by Unknown
Year of discovery Unknown

Boat tie ship (or boat-ship-tie) is an 11-cell still life.

As its name implies, it involves a boat having been tied to a ship.


Main article: List of common still lifes

Boat tie ship is the twenty-sixth most common still life in Achim Flammenkamp's census, being less common than hat but more common than very long boat.[1]

It is the 25th most common still life on Adam P. Goucher's Catagolue, being less common than trans-boat with tail but more common than hat. It is the most common still life with 11 cells, being 15 times as common as elevener.[2]

One way for them to appear is when a pre-ship-tie has one of its cells prevented from forming, as shown below:

x = 11, y = 10, rule = B3/S23 4bo$3bob2o$3bo6bo$b2o5bobo$o7bo$bo7bo$bo5b2o$6bo$3b2obo$5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 4 THUMBSIZE 2 ]]
One generation before a fleet, but one of the cells of a ship-tie is prevented from forming. The two extra cells can come from anywhere and do not have to be sparks.
(click above to open LifeViewer)
RLE: here Plaintext: here

Glider synthesis

All strict still lifes with a population of 21 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.

See also


  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 8, 2009.
  2. Adam P. Goucher. "Statistics". Catagolue. Retrieved on May 5, 2023.

External links