The big book of Hyper Sudoku: 400 Hyper Sudoku Puzzles

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.