44P12.3

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44P12.3
x = 14, y = 14, rule = B3/S23 7bo$6b2o$5b2o$4bo$3bob4o$2bobo4bo$b2obob2obo2b2o$2o2bob2obob2o$4bo4bob o$5b4obo$9bo$7b2o$6b2o$6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 3 GPS 5 ZOOM 24 HEIGHT 500 WIDTH 500 ]]
Pattern type Oscillator
Number of cells 44
Bounding box 14×14
Period 12
Mod 12
Heat 38
Volatility 0.87
Strict volatility 0.87
Discovered by Nicolay Beluchenko
Year of discovery 2009

44P12.3 (or Eye of Sauron[1]) is a period 12 oscillator discovered by Nicolay Beluchenko on March 26, 2009.[2][3]

It is commonly used as a sparker. On January 12, 2019, Tanner Jacobi used it along with dueling banjos, a heavyweight emulator variant, and pipsquirter 1 to build a period 24 glider gun which was then optimized by Matthias Merzenich the next day to be smaller than the previous record holder.[4][5]

Martin Grant found a 81-glider synthesis for this oscillator on January 5, 2015.[6] This was improved to 79 gliders by Matti Ward on February 17, 2018,[7] followed by 62 gliders in June 2019 due to incremental reductions by Jeremy Tan, BlinkerSpawn, Goldtiger997, and Luka Okanishi.[8][9]

References

  1. Jeremy Tan. Re: Synthesizing Oscillators (discussion thread) at the ConwayLife.com forums
  2. Matthias Merzenich. Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. Jason Summers' pattern collections.
  4. Tanner Jacobi. Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  5. Matthias Merzenich. Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
  6. Martin Grant. Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  7. Matti Ward. Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  8. BlinkerSpawn. Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  9. Luka Okanishi. Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums

External links

  • 44P12.3 at Heinrich Koenig's Game of Life Object Catalogs