Sudoku King is a popular digital puzzle game around the world. Its English name is: sudoku. It is completed through logical reasoning. Sudoku was once popular all over the world. By scrambling the numbers and then removing a certain number from them, the remaining numbers form a new number puzzle. The problem-solving process does not require calculations or special mathematical skills, just use your brain and focus. "Sudoku-King of Sudoku" includes four difficulties: simple, medium, difficult, and professional. It also provides a daily question method. There may be multiple solutions to the same puzzle. Playing Sudoku every day can improve your concentration and further develop your brain.