Half-baked knightship

Half-baked knightship
Half-baked knightship image
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Pattern type	Spaceship
Number of cells	1049396
Bounding box	450801 × 461227
Direction	slope 2
Period	2621440 (mod: Unknown)
Speed	(6,3)c/2621440 | Unknown
Heat	Unknown
Kinetic symmetry	Unspecified
Discovered by	Adam P. Goucher
Year of discovery	2014
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1

Half-baked knightship is the first knightship constructed based on the well-known half-bakery reaction with a glider. Chris Cain constructed a much smaller half-bakery knightship a few days later.

In May 2014 Ivan Fomichev found the key reactions, which allow long chains of half-bakeries to regenerate themselves at (6, 3), while also producing extra gliders that reconstruct seed constellations at one end of the ship. When triggered, these seeds produce the small glider salvos that mediate the (6, 3) offset reaction. Components and slow salvo syntheses for the ship were found by the combined efforts of Chris Cain, Ivan Fomichev and Dave Greene.

Adam P. Goucher proposed the base design for the ship, and in July 2014 wrote a Golly script that assembled the components into an unoptimized but working half-baked knightship of any sufficiently large period.

There are several significant differences in design between the 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.

See also

• Half-bakery knightship
• Caterpillar
• Gemini
• Slow salvo