Solving sudoku puzzles may not require mathematics, but mathematicians have found plenty to say about the popular brainteasers.

In theory, it cannot be ruled out that the algorithms might run for longer than the age of the universe. But in practice, many algorithms seem to work just fine. Almost always.

Thomas E. Dilts, Peter J. Weisberg, Philip Leitner, Marjorie D. Matocq, Richard D. Inman, Kenneth E. Nussear, Todd C. Esque, Multiscale connectivity and graph theory ...

Graph analytics, built on the mathematics of graph theory, is used to model pairwise relationships between people, objects, or nodes in a network.