The Observer joins latest logic puzzle craze

THE Observer has joined many newspapers around the world to introduce readers to a new puzzle craze.

"Sudoku'' is a logic game that has been popular in Japan for over 20 years, but it has only just taken the rest of the world by storm.

The Observer will provide a Sudoku puzzle ev- ery day for the next six weeks for readers to test their skill. The aim of the game is to complete a 9x9 grid so that every row, every column and each of the nine 3x3 subdivisons all contain the digits from 1 to 9 inclusive.

The grid is filled with approximately 30 num- bers, the aim being to deduce the others by logic alone. Although there is no mathematics involved, it was originally devised by Leonhard Euler, the 18th Century Swiss mathematician.

The Japanese publisher Nikoli popularised the puzzle in Japan in the 1980s.

The puzzle has swept across the world, and has tapped into a swathe of people who aren't keen on crosswords yet want a challenge to blow away the cobwebs at the start of their day. So, is this puzzle for you? There's only one way to find out.

n Pick up Monday's edition of The Observer for the first of our daily installments. The Ob- server will also provide all the details and tips needed to join the craze.



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