Rewind

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To rewind a pattern is to change it into a form that it would have looked several generations earlier.[1]

For glider syntheses or other multi-object collisions, rewinding the pattern amounts to moving every spaceship back in time by the same number of ticks. A synthesis is only considered valid when it can be rewound back by an arbitrary number of generations.[2]

There is a python script that rewinds gliders, xWSSes, blinkers and beacons in a given pattern by one tick.[3]

See also

References

  1. ↑ Conway's Game of Life: Mathematics and Construction, p. 179
  2. ↑ Conway's Game of Life: Mathematics and Construction, Chapter 5 Glider Synthesis, p. 144
  3. ↑ Dave Greene. "glider-rewinder.py". GitHub. (python 3.x compatible version)

External links

  • Dave Greene (May 29, 2013). Glider Rewinder (discussion thread) at the ConwayLife.com forums
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