KnowraSudokuLinked fromLinked fromThe 6 pages that link to Sudoku, each with the reason it gives.All 6Broader topic 1Related 1Compared with 4Constraint satisfaction problemBroader topic: Its cells are variables, digits are domains, and placement rules are constraints.BacktrackingRelated: Solvers can test candidate digits and retreat when later placements violate the puzzle's constraints.Latin squareCompared with: Sudoku adds subgrid constraints absent from the Latin-square definition.Magic squareCompared with: Sudoku shares row-and-column constraints but does not require equal sums.Mutually orthogonal Latin squaresCompared with: Sudoku adds subgrid constraints rather than requiring pairs of arrays to be orthogonal.NonogramCompared with: Both use intersecting constraints, but Sudoku places digits rather than reconstructing a binary image.