HOW TO PLAY - Complete the grid so that every row, each column and each 2x3 box contains the letters CHERUB (in any order).

If you've not done a Sudoku type puzzle before you'll find lots of help by doing a Google search for Sudoku tips!

HOW TO ENTER THE PRIZE DRAW - Once you've filled in the grid, e-mail the four letters in the pink boxes to: cherubdoku@gmail.com

The winning entry will receive a package of CHERUB goodies including posters, stickers, a badge and an audio book!

Cherubdoku closes on Feb 22nd 2007. For full terms and conditions click here.
 2006 was a quiet year for overseas CHERUB releases, but by the end of 2007 more than half of the world's population will be able to buy a CHERUB book in their native language.

The French will be first off the block in Feburary, followed by editions in Portugese, Czech, Polish, Dutch, Estonian and Mandarin.

Existing fans in Russia, Germany and the USA will also get new CHERUB releases.