Sudoku puzzle, anyone?

The game of Sudoku has been around for decades. In recent years, it has experienced a renewed popularity. The number game is touted as a way to keep a nimble mind. You can find it in newspapers, books and video games like Brain Age.

Sudoku's quick learning curve makes it addictive. It has only a few rules. However, it is difficult to master. But you can do it, or at least have fun trying!

Sudoku Portable is a great way to get started. This computer game presents large, easy-to-see numbers. The rules make sense once you've seen the game grid.

The game controls are intuitive. Just click a blank square and enter a number. Erasing numbers is just as easy. Sudoku Portable can even suggest numbers for each square.

However, Sudoku Portable is not just for beginners. It can accommodate skilled players.  Difficulty settings range from easy to "impossible."

As the name suggests, Sudoku Portable is portable. Put it on a thumb drive, music player or rewritable CD. Sudoku Portable automatically saves your place in the game.

Cost: Free

Link: portableapps.com