Tips on using the Workpad Grid

In
the example, below, you have reached a point where hitting the button doesn’t offer any unique entry
possibilities.

.

However, there are various
strategies you can use, including :

·
Row 2 contains 2
instances “18” which means that cells A2 & G2 must contain the
values 1 & 8 (although it’s not clear which number goes in which
cell). This means that cell F2 can not contain an 8 and must, therefore, be a
6. You can use this rule, also, for Column R (R2 must be a 1) and

·
In column R, the
only cell to contain a 2 is R9. Thus, the corresponding Sudoku Grid Cell, G9,
must contain a 2. Using this rule, you can also look at row 4 and put a 2 in
cell H4.

The
above strategies can be applied to all Rows, Columns & Boxes of nine to
help complete the Grid.

Sudoku.xls
can also be used as a solution aid for the Samurai Su Doku found in The Times. For
more information on this see the Frequently Asked Questions
(faq’s)

Further tips, as well as the last weeks Times Su Doku
puzzles, can be found in the Su Doku section of “The Times” online
at

http://www.timesonline.co.uk/sudoku .

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