The Ultimate CalcuDoku (Mathdoku) Puzzle Book: 500 Clever Ken Puzzles for Adults and Kids, Compact Logical Arithmetic Crossword Puzzles (Paperback) (ISBN-13: 9798697751480)

The Ultimate CalcuDoku (Mathdoku) Puzzle Book: 500 Clever Ken Puzzles for Adults and Kids, Compact Logical Arithmetic Crossword Puzzles

This 132-page CalcuDoku Puzzle Book features

• 500 Puzzles
• 6" x 9"
• white-colored paper
• easy, medium and hard calcudoku (mathdoku) puzzles
• 4x4 and 6x6 size puzzles

We've squeezed as many puzzes as possible into these 132 pages. In doing so, we've saved some trees and kept printing costs down (saving you a bunch). Eco-friendly, wallet-friendly and travel-friendly You'll just love our clever (ken) puzzles.

CalcuDoku Puzzle books are a great way to occupy yourself at home without the use of phones, tablets or laptops. This puzzle book has some hard puzzles for adults, as well as some easy puzzles for kids.