[OT] Sudoku again: How to find a sudoku?

ruby-talk
1

This may help you ...

Let's Make Sudoku!
http://www.pro.or.jp/~fuji/java/puzzle/numplace/makesudoku/sudoku01.html.en

Su DoKu composer
http://www.act365.com/sudoku/
http://www.act365.com/sudoku/Composer.htm