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All 23-Bit Still Lifes Are Glider Constructible

December 27, 2025 / gol In the Game of Life, which still lifes can be produced by crashing gliders together? We’ve known for a few years that the answer cannot be “all of them”, because in 2022 Ilkka Törmä and Ville Salo found a patch of still life that, if it exists in the universe, must have existed since the beginning of time. And so, there is no way we could have produced it out of empty space through glider collisions.

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