Snark

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Snark
14b2o$14bobo$16bo4b2o$12b4ob2o2bo2bo$12bo2bobobobob2o$15bobobobo$16b2o bobo$20bo2$6b2o$7bo7b2o$7bobo5b2o$8b2o7$18b2o$18bo$19b3o$21bo7$3o$2bo$ bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]]
Pattern type Stable reflector
Number of cells 52
Bounding box 23 × 17
Angle 90°
Repeat time 43
Discovered by Mike Playle
Year of discovery 2013

The snark is a 90° stable glider reflector discovered by Mike Playle in April 2013.[1] It is made up of two eaters, a block and an unnamed still life. It is currently the fastest and the smallest 90° stable glider reflector, both in terms of the population and the bounding box.

The reaction was discovered by Dietrich Leithner about 1998, but it consumed another block.[2] A catalyst that could replace the block was found with Bellman, a program for searching catalytic reactions, developed by Mike Playle.

Given its small repeat time, the snark made oscillators of previously unknown periods of 43 and 53 trivial.[3]

References

  1. Mike Playle (April 25, 2013). "Just the place for a Snark!". Retrieved on March 27, 2016.
  2. Adam P. Goucher (February 17, 2010). "Re: Incomplete search patterns - try to complete". Retrieved on May 8, 2013.
  3. Matthias Merzenich (April 25, 2013). "Re: Just the place for a Snark!". Retrieved on March 27, 2016.

External links