Large Print 4 x 4 Easy Kakuro Puzzle Book specifically designed for senior A KAKURO puzzle is constructed on a crossword grid just like a standard crossword, but the digits 1 to 9 are used instead of the letters of the alphabet. In a standard Kakuro puzzle, the Across and Down clues are simply the sums of the digits in the across and down words. The rules of Kakuro are simple: 1. Each cell can contain numbers from 1 through 9 2. The clues in the black cells tells the sum of the numbers next to that clue. (on the right or down) 3. The numbers in consecutive white cells must be unique. Book Features: This book contains 200 classic 4 x 4 Kakuro puzzles Large and Easy To Read Font, solving could be easy Kakuro grids are large, very easy to read, and fill out. An answer key for those kakuro puzzle are found after the puzzle pages Puzzles are printed on high quality white paper 8.5 x 11 inches paper size Kakuro puzzle is a logic puzzle and also a great brain game. If you play kakuro everyday, you'll soon begin to see improvements within your concentration and overall brain power. You could reduce your probabilities of Dementia or Alzheimer's simply by solving logic puzzles. If you like Sudoku and other logic puzzles, you will love Kakuro Puzzle as well! Choose your book today by clicking on the BUY NOW button at the top of this page.