Edge-repair spaceship 1

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Edge-repair spaceship 1
8bo7b$7b4o5b$2bo3bo3b2ob2ob$b4o5bo2b2ob$o3bo7bo2bo$bobo2bo9b$5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 3 ZOOM 24 GPS 3 TRACKLOOP 3 0 -1/3 ]]
Pattern type Spaceship
Number of cells 26
Bounding box 16 × 7
Direction Orthogonal
Period 3 (mod: 3)
Speed c/3 | c/3
Heat 20.7
Kinetic symmetry n
Discovered by David Bell
Year of discovery 1992

Edge-repair spaceship 1 is a c/3 orthogonal edge-repair spaceship that was found by David Bell in 1992.

Edge-repair/perturbation capabilities

While it was the first edge-repair spaceship to be discovered, the usefulness of its edge-repair property was not recognized until July 1997. This edge-repair spaceship can be used to perturb various debris from puffers to create puffers or spaceships of different periods, or stabilise the waltz to form a crotchet ship. Edge repair spaceships can also remove some stationary objects, most notably, two edge-repair spaceships can delete a block. The edge-repair component of this ship is used in much of the known c/3 technology, although one sometimes has to use a different ship to allow the edge-repair component to be accessible.

x = 113, y = 11, rule = B3/S23 107bo3bo$107b2ob2o$108bobo$29bo76bobobobo$16bo11b2o8bo19bo8b2o8bo19bo 8b2o3b2o$o14b4o9bo8b4o15b4o7b2o7b4o15b4o8bo3bo$obo7bo3bo3b2ob2o9bo3bo 3b2ob2o7b2ob2o3bo3bo6bo3bo3b2ob2o7b2ob2o3bo3bo$3o6b4o5bo2b2o8b4o5bo2b 2o7b2o2bo5b4o4b4o5bo2b2o7b2o2bo5b4o$2bo5bo3bo7bo2bo6bo3bo7bo2bo5bo2bo 7bo3bo2bo3bo7bo2bo5bo2bo7bo3bo$9bobo2bo16bobo2bo23bo2bobo4bobo2bo23bo 2bobo$13bo21bo25bo12bo25bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ WIDTH 940 THUMBSIZE 2 ZOOM 8 ]]
From left to right, edge-repair spaceships delete a Herschel, pre-beehive, block, and tumbler
(click above to open LifeViewer)
RLE: here Plaintext: here

Occurrence

See also: List of natural spaceships

At 26 cells, it is the fourth smallest spaceship yet to appear from soup, after three 25-cell spaceships: crab, 25P3H1V0.1 and 25P3H1V0.2.

Glider synthesis

goldenratio found a final step for a synthesis of this spaceship on January 24, 2021, which bubblegum made a complete synthesis out of soon after.[1] Various improvements were posted over the next few days,[2][3][4][5] eventually making ERS1 the cheapest period-3 spaceship to synthesize as of January 27.[6] On July 28, 2024, KtT lowered the cost to 16 gliders.[7][8]

See also

References

  1. bubblegum (January 24, 2021). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  2. Goldtiger997 (January 25, 2021). Message in #cgol on the Conwaylife Lounge Discord server
  3. Tanner Jacobi (January 26, 2021). Message in #cgol on the Conwaylife Lounge Discord server
  4. Goldtiger997 (January 26, 2021). Message in #cgol on the Conwaylife Lounge Discord server
  5. Goldtiger997 (January 27, 2021). Message in #cgol on the Conwaylife Lounge Discord server
  6. Adam P. Goucher. "Census". Catagolue. Retrieved on January 27, 2021.
  7. KtT (July 25, 2024). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  8. shinjuku (#7444809383) (July 28, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.

External links