tlife is a non-totalistic Life-like cellular automaton devised by M. I. Wright on September 6, 2015. It is very 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 from Conway Life do not work in tlife; for example, the blinker die in tlife, and the beacon evolves into an 8-cell still life. Conversely, many patterns from tlife will not work in Conway Life.
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 period-160 oscillator that evolves from a loaf predecessor.
- tlife discussion thread at the ConwayLife.com forums