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)