Washing machine

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Washing machine
b2ob2ob$ob2o2bo$2o4bo$bo3bob$o4b2o$o2b2obo$b2ob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Oscillator type Billiard table
Number of cells 24
Bounding box 7 × 7
Frequency class 41.4
Period 2
Mod 1
Heat 8
Volatility 0.29
Strict volatility 0.29
Rotor type Diagonal on-off
Discovered by Robert Wainwright
Year of discovery Unknown
For other uses of "cloverleaf", see Cloverleaf (disambiguation).

Washing machine (or cloverleaf) is a period-2 oscillator found by Robert Wainwright no later than June 1972.[1] It consists of four diagonal on-off rotors within a single stator.

It is the fifty-sixth most common object on Catagolue in the symmetry the object has (D4_x1), making it the fourth most common period-2 oscillator in that symmetry, but it is much rarer in asymmetric soups.

In other rules

Washing machine is much more common in Grounded Life (B35/S23), even in asymmetric soups. It is the 56th most common object in asymmetric soups and the 21st most common object in D4_x1 soups.


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

External links