Sudoku U: PhD in Sudoku

By Frank Longo

We'll school you in sudoku Find your grade, improve your play--and graduate to the next level.
Sudoku professor Frank Longo has crafted five books with 300 sudoku each, which will take students from solving basics to super-hard, super-expert strategies. Try them and see how far you can go

Warning: these excruciatingly hard puzzles are for sudoku experts only In order to solve these brain-busting conundrums, you must master not only one upper-level technique, but an array of skills. Every one is a challenge.

• Format: Paperback
• Language: English
• ISBN: 1454926112
• ISBN13: 9781454926115
• Release Date: April 2018
• Publisher: Puzzlewright
• Length: 192 Pages
• Weight: 0.55 lbs.
• Dimensions: 0.5" x 5.4" x 8.2"