A unique kind of puzzles, previously unpublished! CalcuDoku puzzles in Samurai (Gattai-5) layout, meaning that in each puzzle there are actually 5 of them. Therefore, each of the 75 puzzles takes much longer to solve and is five times more exciting!In this book, puzzles range from 5×5 to 8×8 (of course, both times 5!) in size.CalcuDoku puzzles are also known under many different names. 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. All in all, lots of fun is absolutely guaranteed!
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