44P12.3

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

44P12.3
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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

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] GUYTU6J reduced the synthesis further to 54 gliders in February 2020.[10]

References
  1. Jeremy Tan (June 10, 2019). Re: Synthesizing Oscillators (discussion thread) at the ConwayLife.com forums
  2. Matthias Merzenich (April 23, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. Jason Summers' pattern collections.
  4. Tanner Jacobi (January 12, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  5. Matthias Merzenich (January 13, 2019). Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
  6. Martin Grant (January 5, 2015). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  7. Matti Ward (February 17, 2018). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  8. BlinkerSpawn (June 10, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  9. Luka Okanishi (June 14, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  10. GUYTU6J (February 26, 2020). Re: Soup-based syntheses (discussion thread) at the ConwayLife.com forums
  • 44P12.3 at Heinrich Koenig's Game of Life Object Catalogs
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