"Ultimate Sudoku 2" is a sequel to a classic Sudoku game. It continues the core rules and gameplay of Sudoku. At the same time, it has been optimized and upgraded in terms of interface design, difficulty levels, and functions, providing players with a more high-quality and challenging Sudoku experience. Sudoku is a digital logic game. Players need to fill in numbers from 1 to 9 in a 9 9 grid according to known numbers so that there are no repeated numbers in each row, each column, and each 3 3 small nine-square grid. Game Features