Smartphone Sudoku is a freeware (though the author may gladly accept donations) Sudoku puzzle game optimized for Windows Mobile 2003 and 5.0 based Smartphones. It supports VGA, QGVA and landscape mode screens on Smartphones and can automatically resume a game from where you left off.

Download Link

http://smartphonecalc.blogdns.org/Sudoku_ARMV4.CAB