I, as do many others, enjoy playing Sudoku.
The native, GPL solution:
There are two main games available for Ubuntu:
gnome-sudoku and ksudoku
The limitation of both these clients is very limited (if any) support for pencil marks. That said, here's how to install them:
The Non-GPL, yet still FREE solution which offers better functionality:
$ # if you have the kdesktop installed:
$ sudo aptitude install ksudoku
$ # if you have the default ubuntu desktop:
$ sudo aptitude install gnome-sudoku
My problem is that I like more advanced puzzles that require full pencil marking support to solve.
My solution was to install a free windows Sudoku program, "Simple Sudoku" (http://angusj.com/sudoku/).
Here's how I got it going: I downloaded Simple Sudoku from the above site to my home folder. The file name was "sudoku-setup.exe"
I followed the directions to install wine located on the ubuntu wiki.
Here are the commands I needed to get it up and running. It was seriously easy:
Myself, I run the K Desktop environment and Wine created a menu item for Simple Sudoku automatically.
$ cd # Gets us to our home dir where we have write permissions.
$ sudo aptitude install wine # install wine
$ wine sudoku_setup.exe # Install Simple Soduku. :-)
This article gives three options for people who want to play Sudoku on Ubuntu. I hope this helps people out there who play way too much Sudoku.