If you’ve ever completed a sudoku puzzle, then you’ve completed a constraint satisfaction problem (CSP). This type of problem is defined as a mathematical question where a number of constraints or ...

The Journal of the Operational Research Society, Vol. 65, No. 10 (OCTOBER 2014), pp. 1602-1610 (9 pages) Sudoku is a puzzle played of an n × n grid N, where n is the square of a positive integer m.