Numerical logic puzzles are puzzles that use the numbers and the set of rules to deal with them.In this book you can find Straights, Numbricks, Suguru and Calcudoku .
With a great variety of number Puzzles this series is ideal for brain training and keeping your mind active.
The number of puzzles in the book is 400 puzzles. This book contains hard and master puzzles. The variety puzzle books for adult's...
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