Rules of Sudoku for Algorithm Exercises

Need to code a Sudoku solver? Here are three rules of Sudoku:

• A 9x9 grids,
• Each row ...
• Each column ...
• Each of the 9 3x3 grids (example A1 A2 A3, B1 B2 B3, C1 C2 C3) must contain all digits from 1 to 9 and each digit is unique.

Read more detailed rules:

http://www.conceptispuzzles.com/?uri=puzzle/sudoku/rules