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Sudoku generation

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SteveD | 07:04 Tue 16th Aug 2005 | Quizzes & Puzzles
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I assume that sudoku puzzles are generated by a computer programmed to produce grids with the numbers 1-9 in the horizontal rows, the vertical columns and the 9-square boxes.

How are numbers then removed up to a point where the puzzle is still solveable by a human being using logic and deduction?

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The following links may give you some useful hints in how to construct a suduko puzzle

http://www.vbforums.com/showthread.php?t=343163
Forum site with tips on creating Soduko puzzles

http://en.wikipedia.org/wiki/Sudoku
Very good webpage with loads of information on Soduko including construction.

Hope this helps

Thanks Fibonacci.

This had puzzled me too

Question Author
Thanks, Fibonacci.  I think I'll just stick to solving them!

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