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2b3o4b3o2b2$o12bo$o12bo$o12bo2$2b3o4b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 450 THUMBSIZE 3 ZOOM 30 GPS 2 LOOP 2 ]]
Pattern type Constellation
Number of cells 18
Bounding box 16 × 9
Period 2
Mod 2
Heat 24
Volatility 0.80
Strict volatility 0.80
Discovered by Hugh Thompson
Year of discovery 1971

Interchange is a common constellation of six blinkers.

There are two different interchanges; the more common one is displayed to the right. The less common variant has five cells between the left and right halves instead of four.

Two gliders reflected along an axis of symmetry with an even number of rows between them form an interchange. With an odd number of rows, it becomes a bi-block instead.

x = 7, y = 4, rule = B3/S23 3bo$b2ob2o$6bo$o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 4 THUMBSIZE 2 ]]
Unlike most common sequences which require only five or six cells the minimum number of cells needed to form an interchange is seven
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RLE: here Plaintext: here

See also

External links