Sudoku (also called Number Place) is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 sub-grids that compose the grid contains all of the digits from 1 to 9. Sudoku Master is a very popular puzzle game. Constantly solving Sudoku puzzles can fully exercise your brain and gain a sense of accomplishment. There are 1000 + Sudoku puzzles in the game to challenge. And there are also four different difficulty levels to challenge. This game will only take up a small amount of storage space and can be played offline anytime and anywhere. Starting with basic difficulty, you can choose a variety of difficulty levels. Free tips can help you out. There are also notes, automatic check function, you can choose whether to use this tool to help you reduce the difficulty of the game. HOW TO PLAY: Place numbers 1 through 9 in empty cells. Each row, column and square(3x3) needs to be filled with numbers 1 through 9, without repeating any numbers within the row, column or square(3x3) When whole sudoku puzzle cells filled with solution without any errors, Puzzle solved!! Choose your favorite input mode : Number first or cell first to play easy sudoku. Features: * Classic puzzle game with elaborate design. * Simple interface, two themes can be selected. * 4 difficulties from easy to expert. * Statistics will record your game achievements. * There is no time limit * It can be played offline and free of charge.