On 10/13/05, David Faught <dave_faught at yahoo.com> wrote:
> Hhhmmm, I must be missing something here.

Yes. This is the puzzle, which (when printed in a fixed-width
typeface) has room for nine digits in each group, even though the
groups aren't 3x3 squares.

 5         |     6     |
           |           |
 9         |           | 3
       +---+---+   +---+---+
       | 4     | 7 |       |     5
   +---+       |   |       +---+
 4 |     5   7 |   |           |
 ---+           |   |           +---
   |           | 1 |           |
   |   +-------+---+-------+   |
   |   | 7   9             |   |
   +---+---+           +---+---+
           |           | 8   9
       +---+---+   +---+---+
 6   4 |       |   | 5     |
       |       +---+       |
       |                 6 |     3

Cheers!

--Tom Phoenix