Absolutely Nasty(r) Sudoku Level 4

By Frank Longo

Warning Only the most skilled sudoku experts should try these mind-blowing puzzles

In this series, you will find puzzles truly worthy of the label "hard." The four volumes of this series range from Level 1 to Level 4, increasing in difficulty with each book. At Level 4, even the fearless approach the mind-melters inside with trepidation.

• Format: Spiral-bound
• Language: English
• ISBN: 1402743998
• ISBN13: 9781402743993
• Release Date: March 2007
• Publisher: Puzzlewright Press
• Length: 160 Pages
• Weight: 0.68 lbs.
• Dimensions: 0.5" x 6.5" x 8.9"