Nastiest Sudoku Book Ever

• Author(s): F. Longo,
• Publisher: Sterling Publishing Company, Incorporated
• Pages: 448
• ISBN_10: 140278015X
  ISBN_13: 9781402780158
  
• Language: en
• Categories: Games & Activities / Sudoku ,

Description:... Only diehards need apply These incredibly difficult sudoku are made to challenge even the most expert solver...and strain their brains to bursting. Each puzzle requires upper-level strategies that have been honed to perfection from regular practice. Designed by powerhouse sudoku creator Frank Longo, they'll have dedicated fans tearing their hair out-and loving every moment.
This is a bind-up of books 2, 3, and 4 our four-part Absolutely Nasty sudoku series.