This is a skill-building game your child will enjoy. It is designed for one player and begins with seven given numbers. Fill in the rest of the grid, but each row, column and color-coded region can only contain one instance of each number. The object of the game is to fill every color-coded square on the grid with one of the five tokens. Unlike traditional Sodoku puzzles, this travel-ready magnetic version uses fewer game pieces and involves a shorter playing time. Each of the twenty double-sided challenge cards is held in place on the game board by magnetic tokens, and various game patterns offer greater visual interest and variety. This is an active game that will help your child develop logic, deductive reasoning and problem solving skills, Take this game along for on the go fun. It comes complete with four levels of play, 40 challenges with solutions, 25 color and numbered magnetic tokens.