Sudoku Daily - Classic Puzzle

Derived from the passion of intellectual games, dreamed of writing an interesting game. Sudoku Kingdom was born that way. According to the wiki, sudoku (数 独) (Nghei / suːdoʊkuː /, / ʔdɒʔ /, / səʔ /, originally called Number Place) is a quiz puzzle about the upcoming Sort numbers based on combinational logic. Based on that, Sudoku Daily is a logic-based number puzzle game and the goal is to place 1 to 9 digit numbers into each grid cell so that each number can only appear once in each row, each c