Simsu

A quick one for the evening. Simsu is a nice and polished game of Sudoku. It has a nice, clear interface, the option to fill in notes, highlighting of numbers and a few other useful features. It stores the current game automatically, so you can take a paus and come back later with your game intact. A nice little way to take a few minutes and relax from work.

There is both a widescreen-mode, seen here, and a more traditional portrait mode.