Cis-beacon and anvil

	Cis-beacon and anvil
	<a href="/wiki/File:Cisbeaconandanvil.png" class="image" title="Cis-beacon and anvil image"><img alt="Cis-beacon and anvil image" src="/w/images/a/a2/Cisbeaconandanvil.png" width="145" height="177" /></a>
	<a href="/wiki/File:Cisbeaconandanvil.png" class="image" title="Cis-beacon and anvil image"><img alt="Cis-beacon and anvil image" src="/w/images/a/a2/Cisbeaconandanvil.png" width="145" height="177" /></a>
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Pattern type	Oscillator
Family	Beacon
Number of cells	19
Bounding box	7×9
Period	2
Mod	2
Heat	2
Volatility	0.10
Strict volatility	0.10
Rotor type	Diagonal on-off
Discovered by	Unknown
Year of discovery	Unknown
Rules
Outer-totalistic rules	B3/S23 – B378/S01235678
Important rules	Conway Life
# of rules	28 = 256
Pattern files
Life 1.05	cisbeaconandanvil_105.lif
Life 1.06	cisbeaconandanvil_106.lif
Plaintext	cisbeaconandanvil.cells
RLE	cisbeaconandanvil.rle
Identifiers
apgcode	xp2_0c813z255d1e8

Cis-beacon and anvil is a period 2 oscillator composed of a beacon and an anvil.

Commonness

Cis-beacon and anvil is about the twenty-fourth most common naturally-occurring oscillator in Achim Flammenkamp's census, being less common than Achim's p4 but more common than test tube baby.^[1]

↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.