200 of the original number-placing puzzles.

Su Doku 'the crossword without words' comes with a health warning: it is seriously addictive.

Here is a collection of 200 su doku puzzles taken from Times Su Doku books 1 & 2 and ranked in order of difficulty, from easy to fiendish. They have been created by Wayne Gould who sets the puzzle for The Times.

Wayne Gould is the brains behind Su Doku. A former High Court judge in Hong Kong, he now spends his time developing the puzzle.

You don't need to be a mathematical genuis to solve the puzzles; it is simply a question of logic.

About the Author

Gould was a lawyer for 13 years in Matamata, New Zealand, before coming to Hong Kong in 1982 where he worked his way up to become Chief District Judge in 1993. He retired from the Judiciary in 1997 and, that same year, during a visit to Japan, he was in a bookstore where, not knowing how to read or speak Japanese, he was drawn to the puzzle which he first thought was a crossword. He was intrigued and later on he decided to take it with him to the United States and Britain. After his initial retirement, in efforts to pass time and sharpen his computer skills, Gould developed the computer program that generates Sudoku puzzles. Wayne Gould says retirement can now wait as Sudoku keeps him busier than ever.

Book Information
ISBN 9780007258956
Author Wayne Gould
Format Paperback
Page Count 384
Imprint Collins
Publisher HarperCollins Publishers
Weight(grams) 254g
Dimensions(mm) 198mm * 129mm * 25mm