Noah's ark

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Noah's ark
10bobo2b$9bo5b$10bo2bob$12b3o6$bo13b$obo12b2$o2bo11b$2b2o11b$3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 AUTOSTART OFF ]]
Pattern type Puffer
Number of cells 16
Bounding box 15×15
Direction Diagonal
Period 1344
Speed c/12
Discovered by Charles Corderman
Year of discovery 1971

Noah's ark is a diagonal puffer that was found by Charles Corderman in 1971. It consists of two mutually stabilizing switch engines and is thus an ark. Its name comes from the variety of objects it leaves behind - in particular, every 1344 generations it produces 42 blocks, 40 blinkers, 22 beehives, eight loaves, four gliders, two boats, two block on tables, two long boats, two ships, and one beacon.

A 3-glider synthesis of a switch engine discovered by Luka Okanishi in March 2017 allowed for a 6-glider synthesis of Noah's ark.

Gallery

The debris left behind every 1344 generations
x = 23, y = 23, rule = B3/S23 9bobo$10b2o$10bo6bo$16bo$16b3o$20b2o$20bobo$20bo2$o$b2o$2o5$3b2o$2bobo $4bo2$5b3o$5bo$6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ]]
6-glider synthesis of Noah's ark
(click above to open LifeViewer)
RLE: here Plaintext: here

External links