Snacker

Snacker
2o16b2o$bo16bob$bobo12bobob$2b2o12b2o2b$7bo4bo7b$5b2ob4ob2o5b$7bo4bo7b $2b2o12b2o2b$bobo12bobob$bo16bob$2o16b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 3 LOOP 9 THUMBSIZE 4 WIDTH 800 HEIGHT 480 ]]
View animated image
View static image
Pattern type	Oscillator
Number of cells	40
Bounding box	20 × 11
Period	9 (mod: 9)
Heat	26.2
Volatility	0.77 | 0.77
Kinetic symmetry	Unspecified
Discovered by	Mark Niemiec
Year of discovery	1972
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3-ckny/S23ainry – B2i34-aejn5-aeiq6-i7c/S234-aijrw5-aiqy6-c
Glider synthesis Fewest gliders 17† Catagolue-generated RLE synthesis Uploaded synthesis RLE snacker_synth.rle †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext snacker.cells RLE snacker.rle
Identifiers apgcode xp9_32acxca23zy04r4zy04r4zo8a6x6a8o Pentadecathlon ID 40P9.2

Snacker is a period-9 oscillator consisting of a pentadecathlon hassled by four eater 1s, found by Mark Niemiec in 1972.

The snacker produces domino sparks, which can be used for a p36 toad hassler. In other cases they may be rather inaccessible due to the eaters. By putting more pentadecathlons, the snacker is extensible as shown below, whose spark is more accessible. This leads to the first period-18 oscillator, 117P18. A more accessible domino spark can also be obtained using a different oscillator shown below.

This oscillator first appeared semi-naturally in the form stabilized by fourteeners instead of eater 1s in March 2016.

Gallery

Additional pentadecathlons can be added to extend snacker. The alternate stabilization on the right was found by Dean Hickerson in April 1998. View animated image. Download RLE: click here

x = 42, y = 19, rule = B3/S23 32b2o2$28b2o6b2o$8b2o21b4o$24bo2bobo6bobo2bo$4b2o6b2o10b4obobo2bobob4o $7b4o17b2ob4ob2o$3bobo6bobo11bo3bo4bo3bo$b3obobo2bobob3o9b3o3b2o3b3o$o 3b2ob4ob2o3bo11b3o2b3o$b2o3bo4bo3b2o9b3o3b2o3b3o$3b2o2bo2bo2b2o11bo3bo 4bo3bo$3bob2o4b2obo13b2ob4ob2o$24b4obobo2bobob4o$24bo2bobo6bobo2bo$31b 4o$28b2o6b2o2$32b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 3 LOOP 9 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 320 WIDTH 600 ]] A much more accessible p9 domino sparker that is only 10 cells larger, and its double variant. (click above to open LifeViewer) RLE: here Plaintext: here

See also

• Worker bee

External links

• Snacker at the Life Lexicon

• Snacker at Adam P. Goucher's Catagolue

• 40P9.2 at Heinrich Koenig's Game of Life Object Catalogs