The vast majority of sudoku puzzles that are labeled ""hard,"" ""expert,"" ""challenger,"" are not really all that difficult. And in a surprising number of cases, they are downright easy. In the ""Absolutely Nasty Sudoku"" books, you will find puzzles truly worthy of the label ""hard."" The puzzles increase in difficulty throughout the four books in the series. It ranges from basic and intermediate puzzles and techniques at Level No. 1, to the most advanced techniques at Level No. 4, along with puzzles that require multiple advanced techniques each time.
By:
Frank Longo Imprint: Sterling Country of Publication: United States Dimensions:
Height: 229mm,
Width: 152mm,
Spine: 13mm
Weight: 308g ISBN:9781402743962 ISBN 10: 1402743963 Series:Absolutely Nasty® Series Pages: 160 Publication Date:01 March 2007 Audience:
General/trade
,
ELT Advanced
Format:Paperback Publisher's Status: Active