Sudoku, also known as Jiugongge, is a unique mathematical logic game. The game consists of 9×9 grids. Players need to infer the numbers of other grids based on the numbers provided by the grids. This kind of game only requires logical thinking skills and has nothing to do with number calculations, so it is also suitable for people who are not good at math. Although the gameplay is simple, the numbers provided are ever-changing, so many educators think that Sudoku is a good way to exercise their brains. Parents are also happy to have a relaxing and learning family Sudoku competition with their children. This speed game is undoubtedly the most learning Sudoku game. In addition to regular digital challenges, there are also uniquely designed daily challenges, rich in gameplay and full of whimsical ideas. While playing games, improve your Sudoku skills, exercise your brain, develop your intelligence, and improve your logical thinking ability! ********Game Features******* • Simple but eye-friendly game design making your game process full of joy. • Each puzzle has only one solution in thsi game. Calmly think, and you will surely find the answer. • Daily challenges with a sense of design, the visuals and content are refreshing. • Four levels of difficulty: Easy, Medium, Hard and Expert. • Note mode helps you think step by step to reason out the correct answer. • Automatically save game data for each difficulty level. • Come and challenge and win your medals. As smart as you, you will definitely be able to sum up various game-solving skills in the Sudoku game, come and try your skills! ******************************* Subscription Subscription is an optional subscription that gives you some bonus to play, such as remove ads， get more daily challenges. You can subscribe to Sudoku for a term of one month with price US$1.99 and a year with price US$9.99. The subscriber's iTunes Account will be charged when the purchase is confirmed. Any unused portion of a free trial period is forfeited when a subscription is purchased. Subscriptions renew automatically unless automatic renewal is turned off at least 24 hours before the end of the current term. Renewal prices are US$1.99 per month and US$9.99 per year. The subscriber's iTunes Account will be charged for a renewal in the last 24 hours of the current period. Purchasers can manage their subscription and turn off automatic renewal in the Account Settings. Subscriptions may be stopped by turning off automatic renewal at least 24 hours before the end of the current period. A subscription cannot be cancelled in the middle of its term. ******************************* Privacy policy: http://www.mygoldenwood.com/privacy.html Terms of service: http://www.mygoldenwood.com/service.html