Racetrack

Racetrack
x = 6, y = 4, rule = B3/S23 3b2o$b3obo$o4bo$b4o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]] #C [[ HEIGHT 500 THUMBSIZE 3 ZOOM 48 ]]
View static image
Pattern type	Induction coil
Number of cells	12
Bounding box	6 × 4
Static symmetry	Unspecified
Discovered by	Unknown
Year of discovery	Unknown
Pattern files Plaintext racetrack.cells RLE racetrack.rle

Racetrack is an induction coil.

It can be welded onto itself to form racetrack-weld-racetrack (shown below), four of which form cloverleaf interchange.

x = 6, y = 6, rule = B3/S23 4bo$3bobo$3bobo$b2o2bo$o4bo$b4o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 24 ]]

racetrack-weld-racetrack (click above to open LifeViewer) RLE: here Plaintext: here

Together with an unnamed still life (apgcode xs24_259aczcid1d93), the cis-mirrored racetrack is the largest still life (with 24 cells) known to be constructible in 4 gliders.

x = 6, y = 9, rule = B3/S23 3b2o$b3obo$o4bo$b4o2$b4o$o4bo$b3obo$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 24 ]]

cis-mirrored racetrack (click above to open LifeViewer) Catagolue: here

External links

• Racetrack and ortho-beacon at Adam P. Goucher's Catagolue