Kakuro (also known as "Cross Sums") is a logical puzzle with simple rules and challenging solutions. The puzzle consists of a playing area of filled and empty cells similar to a crossword puzzle.This Logic Puzzles book is packed with the following features:- 500 Kakuro (10x10) Puzzles.- Answers to every puzzle are provided.- Each puzzle is guaranteed to have only one solution.Includes free bonus puzzles you can download book (Tons of Sudoku Puzzles for Adults & Seniors) Includes free bonus puzzles you can download book (Word Search With Hidden Message: 102 Puzzles for Adults and Seniors)