Wednesday, May 11, 2011

Sudoku Solving Techniques

(click here for rules)

Technique 3 :

Unique Candidate

You know that each block, row and column on a Sudoku board must contain every number between 1 and 9. Therefore, if a number, say 4, can only be put in a single cell within a block/column/row, then that number is guaranteed to fit there. This example illustrates the number 4 as the unique candidate for the cell marked in red.

Sudoku Solving Technique

(click here for rules)

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