Long³ ship

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Long3 ship
x = 6, y = 6, rule = B3/S23 4b2o$3bobo$2bobo$bobo$obo$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]] #C [[ ZOOM 42 ]]
Pattern type Strict still life
Number of cells 12
Bounding box 6 × 6
Frequency class 26.4
Static symmetry xk
Discovered by Unknown
Year of discovery Unknown

Long3 ship (or extra long ship) is a 12-cell still life, the long3 extension of ship.

Notably, together with ship-tie and long6 snake, it is one of three 12-bit still lifes that require a minimum of 2 gliders for its glider destruction.

Glider synthesis

This still life is known to be constructible in 5 gliders.[1]

x = 34, y = 17, rule = B3/S23 25bo$23b2o$2o22b2o7bo$obo28b2o$bobo28b2o$2bobo$3bobo$4b2o10bo$16b2o$ 15bobo4$16b3o$18bo9b2o$17bo10bobo$28bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 3 T 31 PAUSE 2 LOOP 32 ]]
A 5G synthesis[1]
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x = 35, y = 22, rule = B3/S23 22bo$22bobo$22b2o2$2o$obo12bo$bobo9bobo6bo$2bobo9b2o5b2o$3bobo15bobo$ 4b2o2$34bo$32b2o$33b2o5$17bo$17b2o12bo$16bobo12b2o$30bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 3 T 22 PAUSE 2 T 39 PAUSE 2 LOOP 40 ]]
A two-stage 6G synthesis[2]
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Occurrence

See also: List of common still lifes

Among the 121 still lifes with 12 cells, this is the 30th most common still life according to Catagolue.

The octo3obj database contains one collision with long3 ship occurring in the ash.[3]

References

  1. 1.0 1.1 xs12_g8ka53z11 at Adam P. Goucher's Catagolue
  2. The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 12/12-2.rle)
  3. The headerless RLE of the collision is 5b3o3$2o7b2o$2o7b2o2$2o$2o2$bo$2o$obo!

External links