I think the best way to play sudoku is print it and play with pencil and Rubber.

It use SudokuExplainer to generate puzzle use iText to export to PDF.

Require Java 6 update 10 to run.

Thanks

Sudoku

SudokuExplainer

iText

Main

Generating

Result

我喜欢把数独游戏打印在纸上，有铅笔盒橡皮玩。所以我创建了这个程序。这个程序用SudokuExplainer生成数独，用iText 来打印到PDF。你需要adobe reader来显示和打印PDF。