Sudoku 100 Puzzles with Solutions. Multi Level Book 4: Problem solving mathematical travel size brai

This is a 'multi' level (large print and travel size) Su Doku puzzle book as part of the Sudoku 100 Puzzles with Solutions range. Great for those who want something with different and progressive skill levels in the same book including adults and children interested in being challenged and working out the advanced techniques for this great game (basic instructions are at the front and solutions are at the back of the book). A great way to relax and keep your brain active and sharp. A great gift or treat to yourself - this range also has the following difficulty levels (10 books available per level): Easy, Medium, Hard, Fiendish.