Long³ barge

Long3 barge
x = 7, y = 7, rule = B3/S23 5bo$4bobo$3bobo$2bobo$bobo$obo$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]] #C [[ ZOOM 42 ]]
View static image
Pattern type	Strict still life
Number of cells	12
Bounding box	6 × 6
Frequency class	23.9
Static symmetry	xc (D4_x1)
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B/S23 – B35678/S012345678 # of rules 212 = 4096 Isotropic rules B/S2c3c – B2-e34-e5678/S012345678
Glider synthesis Fewest gliders 4 Catagolue-generated RLE synthesis
Pattern files Plaintext long3barge.cells RLE long3barge.rle
Identifiers apgcode xs12_0g8ka52z121 Niemiec ID 12.1 Pentadecathlon ID 12.118

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

Glider synthesis

x = 68, y = 38, rule = B3/S23 o31bo$b2o30b2o$2o30b2o2$65bo$35bo29bobo$36b2o27b2o$35b2o2$60bo$8bo51bo bo$9bo50b2o$7b3o$13bo$14b2o$13b2o6b2o$20b2o33bo$22bo32bobo$55b2o12$36b o$36b2o$35bobo3$56bo$55b2o$55bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 6 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 3 T 66 PAUSE 2 LOOP 67 ]]

Two syntheses of the long3 barge (click above to open LifeViewer)

Long³ barge can be constructed with 4 gliders coming from two opposite directions. Another way is to start with a previously constructed very long barge, and add two cells to it (which can be done with two gliders).

Occurrence

See also: List of common still lifes

Long³ barge is the 163rd most common still life on Adam P. Goucher's Catagolue. It is 1/4 as common as the very long barge.

The octo3obj database contains 4 collisions with this still life occurring in the ash.

Long³ barges almost always form via a traffic light being hit. There are many ways to convert the traffic light to a long³ barge.

x = 49, y = 16, rule = B3/S23 4bo19bo19bo$4bo19bo19bo$4bo19bo19bo2$3o3b3o11b3o3b3o11b3o3b3o2$4bo19bo 19bo$4bo19bo19bo$4bo19bo19bo$6bo39bo$5b3o18bo18bobo$5bob2o16b3o17bobo$ 8bo15b2o2bo12b2o3bo$5bo2b2o15b5o10bo2bo$5bo20b4o10bobo$25b5o11bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 4 THUMBSIZE 2 ZOOM 10 THEME Book AUTOSTART T 0 PAUSE 2 T 23 PAUSE 1 LOOP 24 ]]

(click above to open LifeViewer)

External links

• Long³ barge at Adam P. Goucher's Catagolue
• The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 12/12-1.rle)
• 12.118 at Heinrich Koenig's Game of Life Object Catalogs