J. H. Conway, a British mathematician, proposed a game called "Game of Life" in 1970.
Lifegame is actually a simulation, not a game between players. It's done on a rectangular mesh without boundaries, in this rectangular mesh.
Each unit may or may not be occupied by an organism. The occupied units are called living and the unoccupied units are called dead. Which one?
Yuan is alive and changes from generation to generation depending on the number of living neighborhood units around it.