Sudoku Puzzles: 420 Diagonal Sudoku Puzzles 9x9 (Easy, Medium, Hard, Super Hard), Volume 5

X Sudoku is also referred as Diagonal Sudoku. It is another variation of standard Sudoku. Based on the standard Sudoku, diagonal Sudoku has more requirements. In addition to the requirements of a standard Sudoku, the two diagonal lines also have to be numbers from 1-9 which cannot be repeated. Since Diagonal Sudoku has more requirements, the solving process is more challenging and interesting.

If you are a beginner in Diagonal Sudoku Puzzles, then this book is perfect must have for you. This book will start you off with Easy puzzles gradually increasing in difficulty to Medium; Hard; and then Super Hard.

This Sudoku book is packed with the following features:

• 420 Diagonal Sudoku Puzzles
• 4 different levels of difficulty
• 105 easy level puzzles
• 105 medium level puzzles
• 105 hard level puzzles
• 105 super hard level puzzles
• How to play instructions
• Value buy, perfect for gifts