2 docs tagged with "sudoku"

The Sudoku problem is a popular puzzle where the objective is to fill a 9x9 grid with digits from 1 to 9 so that each column, each row, and each of the nine 3x3 subgrids contain all the digits from 1 to 9 without repetition.

Solve a 9×9 Sudoku puzzle using backtracking with constraint propagation. A classic constraint-satisfaction problem solved by trying digits and backtracking on conflicts.