Although this is basically yet another Sudoku game (yawn...) 'Number Puzzle' is interesting in that Nokia have licensed it and are giving it away free for all registered S60 2nd Edition users on their s60.com site. It's worth the download, anyway.

"Number Puzzle is a challenging numeric game that trains your logical mind. In the game, there are over 200 numbers of puzzles for you to solve. The rule is very simple. Just to make sure no number is repeated every row, column and region. You can use the pencil mark to help you to solve the puzzles. Enjoy!

Compatible phones: Nokia 3230, Nokia 6630, Nokia 6600, Nokia 7610, Nokia 6670, Nokia 6680, Nokia 6260, Nokia 6681, Nokia N90, Nokia N70"