7-in-a-row Cordership

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7-in-a-row Cordership
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Pattern type Spaceship
Family Cordership
Number of cells 289
Bounding box 114×113
Direction Diagonal
Period 96
Mod 48
Speed c/12
Heat 258.3
Discovered by Dean Hickerson
Year of discovery 1998

The 7-in-a-row Cordership is a diagonal spaceship that was discovered by Dean Hickerson on July 23, 1998.[1] It is one of the smallest known Corderships, and is important because it is one of the Corderships with known glider synthesis.

Synthesis and destruction

The 48-glider synthesis for the 7-in-a-row Cordership is interesting because it consists of a 21-glider salvo meeting a 27-glider salvo (as opposed to gliders from various directions building the object step-by-step, as is usually the method of glider synthesis). Because it has a known glider synthesis, a gun has been constructed that fires 7-in-a-row Corderships; it is known as the V gun due to its shape.

This Cordership can also be eaten, as shown by the pattern below that was created on July 4, 2003, based on a glider-extraction reaction found by Karel Suhajda. It consists of seven eater 2s and two tubs to do the majority of the eating, along with some Herschel tracks that produce gliders to clean up some blocks that are left behind.

7-in-a-row Cordership eater
Download RLE: click here

See also

References

  1. Jason Summers' jslife pattern collection.