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Saturday, October 01, 2005

Sudoku Puzzle 001

_______________________
|       |       |       |
| 3   1 |   7 9 |   2 5 |
|       |       |       |
|       | 6     | 4 1 7 |
|       |       |       |
|       |   1 5 | 3     |
|_______|_______|_______|
|       |       |       |
|   9   |   4 7 |     2 |
|       |       |       |
|     4 | 3   8 |   7   |
|       |       |       |
|   8   | 9 6   | 5 3   |
|_______|_______|_______|
|       |       |       |
| 7   5 |   9 6 |   4 8 |
|       |       |       |
| 2 1   | 5     | 7   6 |
|       |       |       |
|   4   | 7   1 | 2 5   |
|_______|_______|_______|

A
sudoku puzzle consists of a 9 x 9-square grid subdivided into nine 3 x 3 boxes. Some of the squares contain numbers.

T
he object is to fill in the remaining squares so that every row, every column, and every 3 x 3 box contains each of the numbers from 1 to 9 exactly once.

S
olving a sudoku puzzle involves pure logic. No guesswork is needed - or even desirable. Following logic you can work your way around the grid, filling in the missing numbers. Send us the correct solution. Winners will be published.

B
elow an example of a sudoku with all the boxes, rows, and columns completely filled in:

_______________________
|       |       |       |
| 5 8 6 | 3 7 4 | 9 1 2 |
|       |       |       |
| 1 3 7 | 9 5 2 | 8 6 4 |
|       |       |       |
| 2 4 9 | 8 1 6 | 5 7 3 |
|_______|_______|_______|
|       |       |       |
| 8 7 2 | 5 4 3 | 1 9 6 |
|       |       |       |
| 6 9 3 | 7 8 1 | 2 4 5 |
|       |       |       |
| 4 1 5 | 6 2 9 | 7 3 8 |
|_______|_______|_______|
|       |       |       |
| 9 5 4 | 2 3 7 | 6 8 1 |
|       |       |       |
| 7 2 1 | 4 6 8 | 3 5 9 |
|       |       |       |
| 3 6 8 | 1 9 5 | 4 2 7 |
|_______|_______|_______|

Posted by fm on October 01, 2005 at 12:03 AM

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