7-engine Cordership

7-engine Cordership
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Pattern type	Cordership Spaceship
Number of cells	180
Bounding box	71 × 65
Direction	Diagonal
Period	96 (mod: Unknown)
Speed	c/12 | Unknown
Heat	196.3
Kinetic symmetry	Unspecified
Discovered by	Dean Hickerson
Year of discovery	1993
Pattern files Plaintext 7enginecordership.cells RLE 7enginecordership.rle

The 7-engine Cordership is a c/12 diagonal spaceship that was discovered by Dean Hickerson on August 14, 1993. Until the discovery of the 6-engine Cordership almost five years later, it was the Cordership that used the fewest known possible switch engines. Corderships that use as few as 3 engines are now known.

This particular Cordership can be used to reflect gliders in a variety of ways. The image below shows two gliders that will be turned counterclockwise by 90 degrees (in red), a glider that will be reflected 180 degrees (in green), and a glider that will be turned into a southbound lightweight spaceship (in blue). For another method of performing a 180-degree glider reflection using the 7-engine Cordership, see glider loop.

Gliders about to be reflected off of the ship
red:90˚, green:180˚, blue:45˚ RLE: here

See also

• 7-in-a-row Cordership
• Sawtooth 362

External links

• 7-engine Cordership at the Life Pattern Catalog

• The Cordership (glider 21362) at David Eppstein's Glider Database