Queen bee

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Queen bee
x = 5, y = 7, rule = B3/S23 o$obo$bobo$bo2bo$bobo$obo$o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Pattern type Methuselah
Number of cells 12
Bounding box 7 × 5
MCPS 12
Lifespan 191 generations
Final population 30
L/I 15.9
F/I 2.5
F/L 0.157
L/MCPS 15.9
Discovered by Unknown
Year of discovery 1970

Queen bee is a somewhat commonly arising pattern that in 15 generations develops into a beehive and a reflected copy of itself. Left alone, after repeating this process another time, it crashes into the first beehive and explodes (splitting into two centuries, which ultimately stabilize into six blocks and two blinkers at generation 191). It is simple to stabilize into an oscillator by deleting the beehives as they are formed, as in the well-known queen bee shuttle. The term queen bee refers not just to the phase shown to the right, but also to any of the other phases of the pattern (excluding the beehives it creates) that occur before it explodes.

Turning reaction

One of the simplest reactions involves a queen bee involves colliding it with two gliders that come in from opposite directions in order to turn (reflect) it; this reaction was found by David Bell and was turned into a period 88 oscillator (shown below) on March 21, 1996. The reaction itself turns the queen bee counterclockwise by 90 degrees in 22 generations.[1]

x = 10, y = 11, rule = b3/s23 bo8b$2b2o6b$b2o7b2$o9b$obo7b$bobo6b$bo2bo5b$bobo4b2o$obo4b2ob$o8bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 HEIGHT 600 WIDTH 600 ]]
Two-glider turning reaction
(click above to open LifeViewer)
RLE: here Plaintext: here
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#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 HEIGHT 600 WIDTH 600 ZOOM 3.5 AUTOSTART ]]
Period 88 queen bee turning oscillator
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RLE: here Plaintext: here

Image gallery

Generation 21 of queen bee
o$o$o$b3o$b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 8 THUMBSIZE 2 ]]
Queen bees often form along with a tub. This can be seen in both the R-pentomino sequence around generation 770 and the p576 R-pentomino hassler. (click above to open LifeViewer)

See also

References

  1. Jason Summers' jslife pattern collection. Retrieved on June 3, 2009.

External links

  • Queen bee (discussion thread) at the ConwayLife.com forums