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 ]]
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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 in which four eater 1s hassle a pentadecathlon, found by Mark Niemiec in 1972.

The snacker produces domino sparks, which can be used for a p36 toad hassler. In other cases the sparks are largely inaccessible due to the eaters; however, the snacker can be extended by putting more pentadecathlons as shown below, or an alternative eater which is also used in L200 can be used, and so a more accessible period 9 domino spark can be obtained -- this method was used to create the first period-18 oscillator, 117P18. Stronger domino sparkers are also known, for example 50P9 and 104P9.

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

x = 34, y = 11, rule = B3/S23 2o$bo$bobo25b2o$2b2o23bo2bo$7bo4bo14b3o$5b2ob4ob2o3bo4bo6b3o$7bo4bo3b 2ob4ob2o3bo3bo$2b2o14bo4bo6b3o$bobo23b3o$bo25bo2bo$2o27b2o! #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 ]]

Additional pentadecathlons can be added to extend snacker, as used in 117P18. The alternate stabilization on the right was found by Dean Hickerson in April 1998 (click above to open LifeViewer) RLE: here Plaintext: here

See also

• Worker bee
• Period-54 glider gun, which uses a snacker
• p29 pentadecathlon hassler
• 72P119

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