Tanner's p46

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Tanner's p46
x = 13, y = 26, rule = B3/S23 2b2o9b$2bo10b$3bo9b$2b2o9b$13b$9b2o2b$9bo3b$10bo2b$9b2o2b$b2o10b$b2o6b 2o2b$o7bobo2b$b2o6bo3b$b2o7b3o$12bo$13b$13b$13b$13b$13b$13b$b2o10b$b2o 2b2o6b$5bobo5b$7bo5b$7b2o4b! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 23 THUMBSIZE 2 HEIGHT 480 ]]
Pattern type Oscillator
Number of cells 41
Bounding box 23×26
Period 46
Mod 46
Heat 21.87
Volatility 0.87
Strict volatility 0.87
Discovered by Tanner Jacobi
Year of discovery 2017

Tanner's p46 is a period-46 oscillator that was found by Tanner Jacobi on October 20, 2017[1] involving a pi-heptomino running a small conduit containing a PT8P and a PT38P.

Tanner's p46 ranked second place in the Pattern of the Year 2017 competition on the ConwayLife.com forums, behind the 2-engine Cordership.[2]

Synthesis

Mark Niemiec posted a trivial 19-glider synthesis of Tanner's p46 two hours after its discovery.[3] This can be reduced to 15 gliders to produce a stator variant that replaces the two snakes with eater 1s.

Uses

Tanner's p46 gives out phi sparks, making it useful for gun constructions. For example, David Bell used Tanner's p46 and a twin bees shuttle to build a period 46 glider gun on October 21:[4]

x = 31, y = 44, rule = B3/S23 17boo5boo$17boo5boo11$17bo7bo$15boboo5boobo$15bo3booboo3bo$16bo3bobo3b o$17b3o3b3o10$14bo14bo$13b3o14bo$12bobobo11b3o$12bobobo$10boob3oboo$9b obooboboobo$3boo3boobo5boboo$3boo4boobo3boboobboboo$10b3o3b3o3boobo$$ bboo$3bo$3o$o13bo$13boboboboo$12bobooboobo$12bo$11boo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 23 THUMBSIZE 2 ZOOM 10 HEIGHT 600 ]]
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RLE: here Plaintext: here

The same day, Matthias Merzenich built a p46 gliderless MWSS gun using two copies of Tanner's p46.[5] In June 2018, Nathaniel Johnston built a p46 gliderless LWSS gun using three copies of the oscillator.[6]

References

  1. Tanner Jacobi (Kazyan) (2017-10-20). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  2. Dave Greene (February 19, 2018). Re: Pattern of the Year 2017 -- votes (discussion thread) at the ConwayLife.com forums
  3. Mark Niemiec (October 20, 2017). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  4. David Bell (October 21, 2017). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  5. Matthias Merzenich (October 21, 2017). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  6. Nathaniel Johnston (2018-06-27). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums

External links