Sudoku Iron Man #1: 150 Fiendishly Difficult, Never-Before-Published Puzzles

by Puzzler Media

150 of the most fiendishly difficult, never-before-published Sudoku puzzles The brand-new Sudoku puzzle series that puts even the most fervent players' skills to the test. There are those who play... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 0451223551
• ISBN13: 9780451223555
• Release Date: November 2007
• Publisher: Berkley Books
• Length: 208 Pages
• Weight: 0.45 lbs.
• Dimensions: 0.6" x 5.5" x 8.1"
• Age Range: 17 years and up
• Grade Range: Grade 12 and higher