From LifeWiki
Jump to: navigation, search
6bobob$5bo4b$2o2bo4bo$2obo2bob2o$4b2o! #C [[ THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 4 THUMBSIZE 2 ]]
Pattern type Oscillator
Number of cells 15
Bounding box 10×5
Frequency class 27.2
Period 8
Mod 4
Heat 9
Volatility 0.89
Strict volatility 0.89
Discovered by Robert Wainwright
Year of discovery Unknown

Blocker is a period 8 oscillator found by Robert Wainwright. It is a useful dot sparker consisting of two blocks hassling an unnamed object which is a dying spark. It reappears half way through its cycle rotated through 180 degrees.

Blockers can also be infinitely connected by "sharing" blocks, as long as adjacent reactions are no more than one phase apart. They can also be connected with Coe's p8, which uses blocks as hasslers in a similar manner.

x = 18, y = 12, rule = B3/S23 6bobo5bobo$5bo7bo$2o2bo4bo2bo4bo$2obo2bob2obo2bob2o$4b2o6b2o3$14bobo$ 5bo7bo$3ob2o2b2o2bo4bo$4o4b2obo2bob2o$4b2o6b2o! #C [[ THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART THEME 6 GRID GPS 8 GRIDMAJOR 0 ZOOM 16 HEIGHT 480 THUMBLAUNCH THUMBSIZE 2 LOOP 9 ]]
Blockers sharing blocks (click above to open LifeViewer)


Blocker is about the sixteenth most common naturally-occurring oscillator in Achim Flammenkamp's census, being less common than mazing but more common than jam.[1] On Catagolue, it is the second most common period 8 oscillator, being less common than the figure eight but more common than Coe's p8.[2]

See also


  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  2. Adam P. Goucher. "Statistics". Catagolue. Retrieved on October 27, 2018.

External links