Calcudoku Puzzle Book for Adults : 200 Easy to Hard 8X8 Puzzles with Solutions

Calcudoku (KenKen KENKEN KenDoku Mathdoku Square Wisdom) is a mathematical and logical puzzle loosely similar to sudoku. It was invented by a Japanese mathematics teacher Tetsuya Miyamoto. Logic puzzles improve concentration relaxation from stress and better memory and problem-solving skills are a few of the many benefits. All it takes is finding the right material that will challenge you no matter what your level of skill is. What this book provides: ·        Three levels of difficulty easy medium hard ·        Solutions for every puzzle included in back of book  ·        68 easy 68 medium 68 hard ·        4 puzzles per Page ·        204 Puzzles. ·        Instruction included in the book on how to solve them.  Plenty of hours of fun! Great gift for all new and old mathematical and logic puzzle fans! We are delighted that you noticed and chose Calcudoku Puzzle Book.  Have fun and solve Calcudoku puzzles !!