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tlife rule
Rulestring 2-i34q/3
Character Chaotic

tlife is a non-totalistic Life-like cellular automaton devised by M. I. Wright on the 6th of September 2015. It is extremely closely related to the much more commonly known rule Life, differing by only two transitions.


tlife is identical to Life in all transitions, save for two:

  • Cells with two adjacent cells in a straight line (as in blinker) will die, and
  • Cells with four adjacent cells (as in the dense phase of beacon) will survive.


Many patterns that work in regular Life will not work in tlife, and the other way round. For example, blinker will die out, and beacon will evolve into an 8-cell still life.

The glider works identically in tlife, however there are two other basic elementary spaceships: a slightly bigger c/4 diagonal (called ant) and a c/5 orthogonal (the T-tetromino, simply called t)

Alongside these, other elementary spaceships have been discovered. One such spaceship, which travels at c/2 orthogonal, is dubbed the disemiMWSS, referencing the fact it looks like two middleweight spaceships interacting with each other. There is also another c/2 orthogonal spaceship that evolves from the queen bee.

There is also a statorless rotating p160 oscillator, which evolves from a loaf predecessor.