Parallel HBK

Parallel HBK
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Pattern type	Spaceship
Number of cells	132945
Bounding box	31080 × 32771
Direction	slope 2
Period	245912
Mod	Unknown
Speed	(6,3)c/245912 | Unknown
Heat	Unknown
Discovered by	Chris Cain
Year of discovery	2014
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1
Glider synthesis Fewest gliders 38380† †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Macrocell parallelhbk.mc

Parallel half-baked knightships were proposed before the first half-baked knightship appeared on the scene, although the actual construction was completed several days later by Chris Cain. This design allows for several slow-salvo construction recipes to be completed in parallel, whereas the first half-baked knightship did all constructions serially.

There are several significant differences in design between the original half-baked knightship and Chris Cain's smaller version. The slow-salvo constructions are done serially in Goucher's design, and an extra glider is used to suppress the salvo that triggers the half-bakery trails.

Consequently, Cain's parallel knightship is much smaller than Goucher's original knightship, in terms of the population count, bounding box and period. It had also been the smallest known example of an oblique spaceship in Conway's Game of Life in terms of the bounding box before discovery of the waterbear later in the same year.

On December 31, 2014 Michael Simkin found a glider synthesis and allegedly built a gun for this spaceship, but nobody has yet run the Golly script that assembles the gun till the end. The approximate population of the gun would be around 2,000,000,000 cells.

On January 3, 2015 Chris Cain built a gun, that can run in Golly in reasonable time.

See also

• Caterpillar
• Gemini
• Waterbear