Century

Century
x = 4, y = 3, rule = B3/S23 2b2o$3o$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
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Pattern type	Methuselah
Number of cells	6
Bounding box	4 × 3
MCPS	6
Lifespan	103 generations
Final population	15
L/I	17.2
F/I	2.5
F/L	0.146
L/MCPS	17.2
Static symmetry	C1
Discovered by	Unknown
Year of discovery	1970
Rules Outer-totalistic rules B3/S23 – B38/S23 # of rules 21 = 2 Isotropic rules B3/S23 – B38/S236e
Glider synthesis Fewest gliders (cheapest variant) 3 Uploaded synthesis RLE century_synth.rle
Pattern files Plaintext century.cells RLE century.rle

Century is a hexomino. It is a common methuselah that evolves into three blocks and a blinker after 103 generations. It produces a temporary toad at generation 59 which is destroyed at generation 79. It is a parent of the bookend.

Century hasslers

As the century is very common, there are many century hasslers, such as the p127 century hassler found by Luke Kiernan. As an early example, David Buckingham built a period-246 glider gun using a century as the engine in June 1996.

Century eaters

Century can be eaten by a spartan configuration of three eater 1s surrounding a beehive, as shown below (century is upper-right in each case). A much smaller century eater was found by Ivan Fomichev in 2013. Both of them play a prominent role in the bistable switch.

x = 21, y = 21, rule = B3/S23 17b2o$15b3o$16bo2$10bo$9bobo$9bobo$10bo5$2b2o13b2o$bobo13bobo$bo17bo$ 2o17b2o2$7b2o$8bo$5b3o$5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 8.5 ]] A Spartan century eater (click above to open LifeViewer) RLE: here Plaintext: here

8b2o$6b3o$7bo6$6b2o$2o3bobo$o2bo2bo$b5o2$3b2obo$3bob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ]] Century eater 2 (click above to open LifeViewer) RLE: here Plaintext: here

Century can also be eaten by a transparent block in two different ways, as shown below.

x = 28, y = 6, rule = B3/S23 26bo$2o18b2o3b3o$2o18b2o2b2o$5bo$4b3o$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 10 ]] Century collisions with a block, where the century gets eaten. Note that they are of lower clearance, so the larger century eaters generally tend to be more useful. (click above to open LifeViewer)

In other rules

In rule B34c/S23 (4diagonal), the century grows to infinity as it is a 46c/220 glide-symmetric dirty puffer. The back end stabilizes at tick 1543.

In rule B38/S23 (Pedestrian Life) there is a 2-glider collision which produces a century from what in life is a b-heptomino synthesis - the century otherwise evolves the exact same way it does in life.

See also

• Queen bee
• Century-to-glider converter

External links

• Century at the Life Lexicon
• Century ash at Adam P. Goucher's Catagolue (pseudo-object)