(combination puzzles, chiefly Rubik's Cube) The maximum number of moves needed to solve a puzzle using God's algorithm.
2010, Cecilia di Chio et al., Applications of Evolutionary Computation, Part 1, →ISBN, page 80:
Although invented in 1974, the number of moves required to solve any state of Rubik's Cube (the so-called God's number) is yet to be determined after 30 years.
