Phil's Sudoku Solver

This sudoku solver shows how puzzles can be solved using purely logical techniques. Each technique is accompanied by a help screen which gives full explanation of the logic involved. The program runs normally in Firefox, normally but slowly in IE, but colours don't display as expected in Chrome due to recent changes to it's Javascript implementation.

Puzzles can be imported in linear or grid form, new or partially completed, or new puzzles can be typed in.


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Click to import grid: 

Utility                    Remaining:
                             
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Enter puzzle manually: 

Puzzle Examples:     
 To see result of n = True, enter 3 digits: n, row, col: 
 To see result of n=False, enter 3 digits: n, row, col: