Absolutely Nasty(r) Sudoku Level 4 -- Frank Longo, Spiral
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.
Author: Frank Longo
Publisher: Puzzlewright Press
Published: 3/1/2007
Pages: 160
Binding Type: Spiral
Weight: 0.65 lbs
Size: 8.9" H x 6.5" L x 0.5" W
ISBN: 9781402743993