Sudoku, which began its attack on the nation last year, is the Rubik's cube of the new millennium. Invented in Basel, Switzerland, by an 18th Century mathematician called Leonhard Euler, Sudoko made its way via Japan, and a New Zealand-born judge and amateur computer programmer,Wayne Gould, to Britain and now Australia, where newspapers such as The Age and Sydney Morning Herald have swarmed over the idea. Their readers have apparently refused all nourishment until they are given their daily dose. Sudoko is a number puzzle, with 9 boxes across and 9 down forming an 81 square grid, with missing numbers.You've got to put the correct numbers in the blank boxes so that each horizontal line, and each vertical line, as well as each 3 x 3 block has got the numbers 1 to 9 in it. Cryptic crosswords addicts, number cruncher cravers and puzzles people alike will love The Original Sudoko