Four molds hassling eight blocks

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Four molds hassling eight blocks
x = 26, y = 26, rule = B3/S23 13b2o$12bo2bo$10bo2bobo$14bo$10bob2o$11bo$3b3o$bob3o$obobo3b2o6b2o$o2b o4b2o2bobob2o$b2o10bo$8b2o$8b2o$16b2o$16b2o$23b2o$8b2ob2o3b2o4bo2bo$8b 2ob2o3b2o5bobo$21b2obo$21b3o$6bobo12b2o$5bo$6bo2bo$6bobobo$7bo2bo$8b2o ! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ AUTOSTART THUMBSIZE 2 GPS 13 HEIGHT 480 WIDTH 480 ]]
Pattern type Oscillator
Number of cells 83
Bounding box 26×26
Period 52
Mod 13
Heat 34.62
Volatility 0.84
Strict volatility 0.56
Discovered by Noam Elkies
Year of discovery 1995

Four molds hassling eight blocks is a period-52 oscillator consisting of four molds hassling four bi-blocks in the same way as the p18 bi-block hassler. It was discovered by Noam Elkies on February 21, 1995.[1]

The variant shown in the infobox (the same variant as in Hickerson's stamp collection) shows two different ways in which the molds can be arranged. A 31-glider synthesis is known for a rotationally symmetric version of this oscillator.


  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.

External links