Reversed Game of Life

Brain puzzle game: reverse the game of life! The Game of Life is a game invented by John Conway. The rules are simple: - a cell survives only if it has 2 or 3 neighbors; - a new cell is born if it has exactly 3 neighbors. Predicting the next state in the Game of Life is straightforward. However, predicting the previous state is much more difficult. It is this goal of this brain game to determine the previous state. The game contains 60 levels, starting with 3 X 3 worlds, ending with 6 X 6 worlds.