Obo! spark

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obo! spark
x = 3, y = 1, rule = B3/S23 obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Pattern type Spark
Number of cells 2
Bounding box 3 × 1
Discovered by Unknown
Year of discovery Unknown

An obo! spark is a spark of the form O.O (so called after its RLE encoding).

Obo! sparks notably cannot occur at the edge of a pattern's envelope without cells having been in that column beforehand, which is why all of the sparkers use non-edgy predecessors like the one shown below.

x = 3, y = 3, rule = B3/S23 b2o$3o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 2 THUMBSIZE 2 ]]
A common parent of the obo! spark, which appears in both Beluchenko's p40 and p76 pi-heptomino hassler (click above to open LifeViewer)
RLE: here Plaintext: here

See also

External links