c/3 diagonal is actually impossible as well - the limit is c/4, proved by Conway himself in Life's early years. His proof can be found here: http://www.njohnsto

c/3 diagonal is actually impossible as well - the limit is c/4, proved by Conway himself in Life's early years. His proof can be found here: http://www.njohnston.ca/2009/10/spaceship-speed-limits-in-life-like-cellular-automata/ http://www.njohnston.ca/2009/10/spaceship-speed-limits-in-li...