44P12.3
44P12.3 | |||||||||||
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Pattern type | Oscillator | ||||||||||
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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 | ||||||||||
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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] GUYTU6J reduced the synthesis further to 54 gliders in February 2020.[10]
References
- ↑ Jeremy Tan (June 10, 2019). Re: Synthesizing Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (April 23, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Jason Summers' pattern collections.
- ↑ Tanner Jacobi (January 12, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (January 13, 2019). Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
- ↑ Martin Grant (January 5, 2015). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Matti Ward (February 17, 2018). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ BlinkerSpawn (June 10, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Luka Okanishi (June 14, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ GUYTU6J (February 26, 2020). Re: Soup-based syntheses (discussion thread) at the ConwayLife.com forums
External links
- 4 period 12 oscillators 26 bits and larger at Mark D. Niemiec's Life Page
- 44P12.3 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Oscillators with 44 cells
- Patterns with 44 cells
- Patterns found by Nicolay Beluchenko
- Patterns found in 2009
- Patterns that can be constructed with 54 gliders
- Oscillators
- Periodic objects with minimum population 44
- Oscillators with period 12
- Oscillators with mod 12
- Oscillators with heat 38
- Oscillators with volatility 0.87
- Oscillators with strict volatility 0.87
- Patterns with rectangular diagonal symmetry
- Sparkers
- Sparkers with period 12
- Non-reflecting duoplet sparkers
- Strong sparkers
- Dot sparkers
- Unnamed periodic objects
- Semi-natural periodic objects