Sudoku
A Japanese logic puzzle is sweeping the globe. It is called sudoku, a combination of the Japanese words for number and single.

I first learned of it in the May 21st Economist. The "easy" puzzle shown below is taken from that magazine.

Fill in the blanks so that every row, column, and block (separated by white space) contains 1 to 9.

- - -   - 1 -   - - -
3 - 1   4 - -   8 6 -
9 - -   5 - -   2 - - 

7 - -   1 6 -   - - -
- 2 -   8 - 5   - 1 -
- - -   - 9 7   - - 4 

- - 3   - - 4   - - 6
- 4 8   - - 6   9 - 7
- - -   - 8 -   - - -

- served up by Oven @ 1:36 PM