Difference between revisions of "Eye of Sauron"

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'''44P12.3''' (or '''Eye of Sauron'''<ref name="post77410" />) is a {{period|12}} [[oscillator]] discovered by [[Nicolay Beluchenko]] on March 26, {{year|2009}}.<ref>{{LinkGoLNews|2009/04/new_oscillators_5.html|title=New Oscillators|date=April 14, 2009|author=Heinrich Koenig}}</ref><ref>{{CiteSummersPattern}}</ref>
'''44P12.3''' (or '''Eye of Sauron'''<ref name="post77410" />) is a {{period|12}} [[oscillator]] discovered by [[Nicolay Beluchenko]] on March 26, {{year|2009}}.<ref>{{LinkGoLNews|2009/04/new_oscillators_5.html|title=New Oscillators|date=April 14, 2009|author=Heinrich Koenig}}</ref><ref>{{CiteSummersPattern}}</ref>


It is commonly used as a [[Duoplet]] [[sparker]], for example in some variants of [[p48 pi-heptomino hassler]] and [[pi orbital]]. On January 12, {{year|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.<ref name="post67786" /><ref name="post67805" />
It is commonly used as a [[sparker]], for example in some variants of [[p48 pi-heptomino hassler]] and [[pi orbital]]. On January 12, {{year|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.<ref name="post67786" /><ref name="post67805" />


[[Martin Grant]] found a {{gliders|81}} [[synthesis]] for this oscillator in {{year|2015}},<ref name="post15718" /> improving over an earlier known 142-glider synthesis listed on Mark Niemiec's Life Page. This was improved to {{gliders|79|brief}} gliders by [[Matti Ward]] on February 17, {{year|2018}},<ref name="post56651" /> followed by {{gliders|62|brief}} gliders in June {{year|2019}} due to incremental reductions by [[Jeremy Tan]], [[BlinkerSpawn]], [[Goldtiger997]], and [[Luka Okanishi]].<ref name="post77444" /><ref name="post77747" /> GUYTU6J reduced the synthesis further to {{gliders|54|brief}} gliders in February {{year|2020}} by improving the cost of starting still life.<ref name="post90300" /> In 2022, a new improvement to another base still life lowers the cost to 45 gliders.<ref name="j3385551876" />
[[Martin Grant]] found a {{gliders|81}} [[synthesis]] for this oscillator in {{year|2015}},<ref name="post15718" /> improving over an earlier known 142-glider synthesis listed on Mark Niemiec's Life Page. This was improved to {{gliders|79|brief}} gliders by [[Matti Ward]] on February 17, {{year|2018}},<ref name="post56651" /> followed by {{gliders|62|brief}} gliders in June {{year|2019}} due to incremental reductions by [[Jeremy Tan]], [[BlinkerSpawn]], [[Goldtiger997]], and [[Luka Okanishi]].<ref name="post77444" /><ref name="post77747" /> GUYTU6J reduced the synthesis further to {{gliders|54|brief}} gliders in February {{year|2020}} by improving the cost of starting still life.<ref name="post90300" /> In 2022, a new improvement to another base still life lowers the cost to 45 gliders.<ref name="j3385551876" />

Revision as of 06:55, 16 September 2023

44P12.3
44P12.3 image
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Pattern type Oscillator
Number of cells 44
Bounding box 14 × 14
Period 12 (mod: 12)
Heat 38
Volatility 0.87 | 0.87
Kinetic symmetry Unspecified
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, for example in some variants of p48 pi-heptomino hassler and pi orbital. 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 in 2015,[6] improving over an earlier known 142-glider synthesis listed on Mark Niemiec's Life Page. 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 by improving the cost of starting still life.[10] In 2022, a new improvement to another base still life lowers the cost to 45 gliders.[11]

References

  1. ↑ Jeremy Tan (June 10, 2019). Re: Synthesizing Oscillators (discussion thread) at the ConwayLife.com forums
  2. ↑ New Oscillators at Game of Life News. Posted by Heinrich Koenig on April 14, 2009.
  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
  11. ↑ The Catagolue cost of the oscillator was 54 on November 25, 2022, and 45 gliders on December 5, 2022.

External links

Retrieved from "https://conwaylife.com/w/index.php?title=Eye_of_Sauron&oldid=137055"