Long barge

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Long barge
x = 5, y = 5, rule = B3/S23 bo$obo$bobo$2bobo$3bo! #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 11.8
Discovered by JHC group
Year of discovery 1970

Long barge is an 8-cell still life discovered by the JHC group in 1970.[1] It is a long version of a barge. It can be trivially extended to produce ever longer barges.

It can "eat" two domino sparks, such as those produced by pentadecathlon; said sparks can be replaced with blocks to form unix.


Long barge is the fourteenth most common still life in Achim Flammenkamp's census, being less common than eater 1 but more common than aircraft carrier[2] It is also the nineteenth most common object on Adam P. Goucher's Catagolue.[3]

The barge is 7.5 times as common as the long barge, but the long barge is 12,000 times as common as the very long barge.

Longer versions

Since the barge is infinitely extensible, there are an infinite number of long^n barges, one for every positive n:

Very long barge

Main article: Very long barge

Long^3 barge

Main article: Long^3 barge

Long^4 barge

Long4 barge (or remarkably long barge) is the long^4 version of the barge. It is a 14-bit still life.

Long^5 barge

Long5 barge (or very4 long barge) is the long^5 version of the barge. It is a 16-bit still life.

Long^6 barge

Long6 barge (or very5 long barge) is the long^6 version of the barge. It is a 18-bit still life.


  1. Dean Hickerson's oscillator stamp collection. Retrieved on June 18, 2009.
  2. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on March 30, 2010.
  3. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

External links

  • 14.598 at Heinrich Koenig's Game of Life Object Catalogs
  • 16.3111 at Heinrich Koenig's Game of Life Object Catalogs
  • 18.17791 at Heinrich Koenig's Game of Life Object Catalogs
No corners (barges) (^-2) • (^-1) • ^0^1^2^3
One corner (boats) (^-2) • (^-1) • ^0^1^2^3
Two corners (ships) (^-1) • ^0^1^2^3