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This instructable provides step by step instructions to complete a Sudoku puzzle by simple process of elimination. 

One of the things I that drove me crazy about Sudoku is how difficult it is to return to a puzzle if you get interupted. This system allows you to walk away from a puzzle at any time and return exactly where you left off.
You need: 

1. A sudoku puzzle. I enlarged this one (which was the puzzle that appeared on Sudoku.com on July 8, 2006.) to make photography easier. I find this system works better on larger puzzles. 

2. A pencil, Not a pen. A pencil. 

3. An eraser.
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A puzzle printed on a square grind of nine large squares each subdivided into nine smaller squares, the object of which is to fill each of the 81 squares so that each column , row and large square.
                                HOW TO SOLVE IT
here are various strategies to solving a sudoku puzzle. One of the preffered strategies uses a few smaller tactics.First ,one tries to fill in all the 1s then the 2s etc. After no more progress is possible this way,one goes to each blank space and lists the possible no.s to go in each . If one gets stucks , one must mentally fill in a no. , and continue mentally . If this doesn't work try the other no. The most important thing to remember is not to fill a no. without being sure of the answer..
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