This is volume 2 of the CalcuDoku series of books by DJAPE. This book was previously published under a different name. In this new release, everything is the same except for the title. CalcuDoku, or "Square Wisdom," puzzles are also known under another name. The name might be different, but the puzzles are of the same kind and ever so exciting These Sudoku-like puzzles require you to use all four basic arithmetic operations: +, -, * and /. One must develop new skills and find new techniques in order to solve them. In this book there are 200 puzzles ranging from 5x5 to 9x9 in size. In some puzzles some operators are removed, just to make it a little more difficult. All in all, lots of fun is absolutely guaranteed