The Big Book of Hyper Sudoku

Printed on high-quality paper that will easily withstand the constant erasing and re-writing that a Sudoku puzzle requires, this book contains 400 graded Hyper Sudoku puzzles. The 400 puzzles are broken down as... 100 easy puzzles. Perfect if you've never played Hyper Sudoku before 100 medium puzzles. A little more challenge. 100 hard puzzles. 100 tough puzzles. Perfect for those who are experienced Hyper Sudoku puzzlers looking for extra challenge.

Every puzzle has a unique solution and can be solved by logic alone - no guessing required. Full answers are given in the book.

Hyper Sudoku puzzles are very similar to standard Sudoku puzzles, but there are 4 extra regions - highlight in light grey. You must place the numbers 1-9 with no duplications in each of these extra regions.