brians-brain/README.md

   1 Brian's Brain
   2 =============
   3
   4 https://en.wikipedia.org/wiki/Brian%27s_Brain
   5 https://en.wikipedia.org/wiki/Brian_Silverman
   6
   7 > Brian's Brain is a cellular automaton devised by Brian Silverman, which is
   8 > very similar to his Seeds rule.
   9 >
  10 > Rules
  11 > -----
  12 > Brian's Brain consists of an infinite two-dimensional grid of cells, but
  13 > unlike Seeds, each cell may be in one of three states: on, dying, or off.
  14 > Each cell is considered to have eight neighbors (the Moore neighborhood), as
  15 > in Seeds and Conway's Game of Life.
  16 >
  17 > In each time step, a cell turns on if it was off but had exactly two
  18 > neighbors that were on, just like the birth rule for Seeds. All cells that
  19 > were "on" go into the "dying" state, which is not counted as an "on" cell in
  20 > the neighbor count, and prevents any cell from being born there. Cells that
  21 > were in the dying state go into the off state.