Sudoku in Emacs

Emacs never ceases to amaze me. Today as i was reading an article about avid sudoku players i got the urge to play some sudoku. Since im such a geek i prefer playing sudoku in my computer or my cellphone rather than on paper, the idea poped in to my head : “it would be awesome to play some sudoku in emacs”.

So just for fun i decided to google it, and i found that someone already did a major mode to play sudoku in emacs and it even downloads new puzzles.

The following is taken from the website:

A major mode for playing sudoku puzzles on emacs. This allows you to download new puzzles from websudoku.com on the fly. In addition, roughly 200 puzzles are included. You can set four different levels: easy, medium, hard, and evil.

Thanks to the hard work of Lewis G. Creary, I am happy to announce a new and much improved version of sudoku.el, with numerous new features, bugfixes, and usability improvements. Please download it and let me know what you think.

Here is the link, enjoy your puzzles =D

Emacs Backup

This is a simple hack.

If you want emacs to backup the files you edit just put this line on your .emacs file:

(setq home-backup “MyDir”)

just replace MyDir with the directory you wish to save your backup files to.

If you are like me you want to carry your emacs with you everywhere in your USB hard drive. PigPog has the solution here.

Using that hack you can use the following line to back up directly to your USB hard drive:

(setq home-backup (concat (getenv “HOME”) “Backup/”))

The above line backups the file to your %HOME%/Backup/