Posted by **Jose Morales** on Monday, June 14, 2010 at 5:43pm.

How do you complete Number-Grid Puzzles?

- Sudoku? -
**MathMate**, Tuesday, June 15, 2010 at 7:58am
If you are referring to Sudoku, they are puzzles unrelated to math.

In fact, a sudoku puzzle could be made up of grids of nine celebrities instead of 9 digits!

The rule of the game (using digits) is to complete the grid so that every row, column and each of the 9 sub-squares of nine cells contain all the nine-digits, once and only once.

Different techniques are available for the different levels of difficulties of the puzzle.

Try for example:

http://www.palmsudoku.com/pages/techniques-overview.php

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