Biting off more than they can chew

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Biting off more than they can chew
o11b$3o9b$3bo8b$2b2o8b$3b2o7b$4b2o6b$3bo2bo5b$3bo2b2o4b$4b2ob3o2b$8bob ob$10bob$10b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 3 ZOOM 30 GPS 2 ]]
Pattern type Oscillator
Number of cells 22
Bounding box 12 × 12
Period 3 (mod: 3)
Heat 10.7
Volatility 0.50 | 0.50
Kinetic symmetry /
Discovered by Peter Raynham
Year of discovery 1972

Biting off more than they can chew (or eater-bound pond[1]) is a period-3 oscillator found by Peter Raynham in July 1972.[2][3] Its alternate name of "eater-bound pond" comes from the fact that in generation 1, the object between the two eater 1s is a predecessor of the pond.

A 13-glider synthesis of the oscillator was known by March 2021.[4] On June 2, 2024, Aleph found a 10-glider synthesis based on an edgy fishhook synthesis found by Carson Cheng and Chris857.[5][6]

The oscillator can be extended by placing more copies of the middle object, rotating each new one by 180°:

x = 16, y = 15, rule = 23/3 2o14b$bo14b$bobo12b$2b2o3bo8b$5b2obo7b$5bobo8b$6b2o8b2$8b2o6b$8bobo5b$ 7bob2o5b$8bo3b2o2b$12bobob$14bob$14b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 3 ZOOM 30 ]]
An extension of the oscillator
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

Higher-period analogues

The pond reaction is period-agnostic, so it works at higher periods. Six examples are shown below.

x = 150, y = 135, rule = B3/S23 6$20b2obo37b2obo46b2obo$20bob2o37bob2o46bob2o$18b2o39b2o4b2o42b2o4b2o$ 18bo40bo5bo43bo5bo$19bo40bo5bo43bo5bo$18b2o39b2o4b2o42b2o4b2o$20b2obo 37b2obo46b2obo$20bob2o37bob2o46bob2o$18b2o4b2o33b2o4b2o48b2o$18bo5bo 34bo5bo49bo$19bo5bo34bo5bo49bo$18b2o4b2o33b2o4b2o48b2o$20b2obo37b2obo 46b2obo$20bob2o37bob2o46bob2o11$22bo$21bobo85bo9bo$21bobo85b3o5b3o$17b 2ob2ob2ob2o84bo3bo$17bo4bo4bo83b2o3b2o$18b3o3b3o$20bobobo40bo47b3o$21b 3o41b2o45bo3bo$12b2o17b2o32b2o$12bobo4b2o3b2o4bobo33bo$14bo3bo2bobo2bo 3bo81bo3bo$12bob2o2bo2bobo2bo2b2obo36b2ob2o39b3o$10b3o3bo2b2o3b2o2bo3b 3o32bo2bob2o24b2o29b2o$9bo3bob2o11b2obo3bo31bo2bo28bo11b2o3b2o11bo$10b 3o3bo2b2o3b2o2bo3b3o32b2obo28bobo8bo2bobo2bo8bobo$12bob2o2bo2bobo2bo2b 2obo36bo30b2o2bo2bo2bo2bobo2bo2bo2bo2b2o$14bo3bo2bobo2bo3bo34b2o36bo4b o2b2o3b2o2bo4bo$12bobo4b2o3b2o4bobo21b3o7bo2bo35bo4bo11bo4bo$12b2o17b 2o22b3o6bo2bo35bo4bo2b2o3b2o2bo4bo$21b3o36b3o2b2o33b2o2bo2bo2bo2bobo2b o2bo2bo2b2o$20bobobo37bo36bobo8bo2bobo2bo8bobo$18b3o3b3o32bo3bo35bo11b 2o3b2o11bo$17bo4bo4bo31b4o35b2o29b2o$17b2ob2ob2ob2o85b3o$21bobo35b2o 51bo3bo$21bobo35b2o$22bo$112bo3bo$113b3o2$111b2o3b2o$112bo3bo$109b3o5b 3o$109bo9bo11$16b2o4b2obo29b2o3b2obo44b2obo6b2obo$17bo4bob2o30bo3bob2o 44bob2o6bob2o$16bo3b2o4b2o27bo8b2o46b2o2b2o4b2o$16b2o2bo5bo28b2o7bo47b o3bo5bo$21bo5bo37bo47bo3bo5bo$16b2o2b2o4b2o27b2o7b2o46b2o2b2o4b2o$17bo 2bo5bo29bo3b2obo44b2obo4bo5bo$16bo4bo5bo27bo4bob2o44bob2o5bo5bo$16b2o 2b2o4b2o27b2o7b2o46b2o2b2o4b2o$20bo5bo37bo47bo3bo5bo$16b2o3bo5bo27b2o 8bo47bo3bo5bo$17bo2b2o4b2o28bo7b2o46b2o2b2o4b2o$16bo5b2obo29bo4b2obo 44b2obo6b2obo$16b2o4bob2o29b2o3bob2o44bob2o6bob2o7$71bobobobo$70bob2ob 2obo$68b3o7b3o28b2o$26bo40bo4b2ob2o4bo27b2o$24bobo40bo2b2obobob2o2bo$ 25bobo38b2obobo5bobob2o$25bo41bobo2b2ob2o2bobo$67bobo3b3o3bobo$20bo6b 4o37bo11bo$5b2o14b2o3bo4bo$5bobo8bo2b2o4bobo3bo$6bobob3o2bobo3bo2bobo 3bo$7b2obobo3bo7bo$8b3o13bo5b2o4bo72b3o$4b3o6b2o5b2o2bo2bobobo2bobo36b 3o32bo3bo$10bob3o4bo2bo2b2o2b2o4bobo18bo15bo3bo30bo5bo$9bob3o5bo2bo12b o18b5o13bo3bo31bo3bo$10b2o8b2o31bo5bo13b3o33b3o$15b3o12bo22bo2b3o50b3o $14bobob2o11b2o19b2obo15b2o3b2o$14bo3b2o9b2o20bo3b2o13bo2bo2bo30b2o3b 2o$15b2o3bo10bo20bobo2bo8b2o2bo2bo3b3o28bo2bo2bo4bo$17b3o31b2ob2ob2o6b o2bo2b2o6bo25b3o3bo2bo3bobo$15b2o41bo6bo2bo36bo6b2o2b2o3bo$16bob2o31b 2ob2ob2o6bo2bo47b2o3bo9b2o$16bo2bo32bobo2bo8b2o2b2o44b2o3bo9b2o$17b2o 32bo3b2o13bobo40b2o3bobo$52b2obo16bo39bobo4bo$53bo2b3o13b2o38bo$53bo5b o51b2o$54b5o$56bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 WIDTH 800 HEIGHT 800 ZOOM 6 GPS 4 AUTOSTART ]]
Periods 6 with Sombrero, 8 with an unnamed oscillator, 9 with worker bee, 10 with multiple oscillators, 13 with 66P13, and 30 with Queen bee shuttle
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RLE: here Plaintext: here

See also

References

  1. ↑ "Eater-bound pond". The Life Lexicon. Stephen Silver. Retrieved on December 3, 2018.
  2. ↑ Robert Wainwright (September 1972). Lifeline, vol 5, page 1.
  3. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  4. ↑ xp3_32aczx4b560o8gzy632 on Catagolue, archived on March 8, 2021
  5. ↑ Aleph (June 2, 2024). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  6. ↑ shinjuku (#6996692583) (June 2, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.