DAIJI and Kanji Numbers are used in around Asia in everyday language, mostly in China and Japan. For those among us who like a puzzle that is a bit more challenging but do not speak the language we have posted an image inside the puzzle book for you to refer to the translation of the Daiji and Kanji numbers into Roman Numerals. Look for our DAIJI and Kanji puzzles variations: SUDOKU SUDOKU X SUDOKU HYPER Just click on deVen Publishing (Author) near the top of the listing. Even though Sudoku seems to be a game of numbers, it really has nothing to do with numbers or math. It's a logic game. However, there are also some later variations of Sudoku in my collection that need some math to get to the solution. Currently we offer under the brand deVen Publishing the logic style games only, with some variations by replacing the numbers by letters or other symbols in order to increase the fun and difficulty for the player. In this puzzle book we'll only use numbers that are printed with the vision impaired in mind. The goal of this Sudoku puzzle is to fill an entire 9x9 grid with the digits 1 to 9, while given a couple of clues. For regular Sudoku's, each digit from 1 to 9 must occur exactly once in each row, exactly once in each column, and exactly once in each 3x3 subgrid. This Sudoku book will make an excellent birthday gift for yourself, spouse, friends, parents and grandparents a present during all holidays, vacations, road trips, or any time you want to relax a bit while excising your brain cells.