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x = 7, y = 5, rule = B3/S23 2b2o$bob3o$o5bo$b4obo$3bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]] #C [[ ZOOM 48 ]]
Pattern type Strict still life
Number of cells 15
Bounding box 7 × 5
Frequency class 21.7
Discovered by Unknown
Year of discovery Unknown

15-bent-paperclip (or short cis hook w/tail siamese down long hat) is a 15-cell still life.


See also: List of common still lifes

It is the 94th most common still life on Adam P. Goucher's Catagolue, being less common than trans-boat with nine but more common than beehive with nine. It is the 6th most common still life with 15 cells, being less common than trans-boat on dock but more common than cis-bun and wing.[1]

Glider synthesis

Bob Shemyakin found a 4-glider synthesis of this still life on June 27, 2014.[2] It also appears in the ash of some 3-glider collisions, for example:

x = 35, y = 19, rule = B3/S23 2bo$2o$b2o3$4b3o$4bo$5bo9$33bo$32b2o$32bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
A 3-glider collision that produces a 15-bent-paperclip
(click above to open LifeViewer)
RLE: here Plaintext: here

See also


  1. Adam P. Goucher. "Statistics". Catagolue. Retrieved on May 4, 2023.
  2. Bob Shemyakin (June 27, 2014). Re: 4 glider syntheses (discussion thread) at the ConwayLife.com forums

External links