Classic Sudoku Challenge

A classic Sudoku game for novices and advanced players. Whether you want to relax or exercise your brain, pass the time in a pleasant way! Take a short, exciting break with sudoku, or get rid of the routine in your heart. No matter where you go, there are always beloved games with you. The experience of playing sudoku on a mobile device is as good as using a pen and paper.

Choose any difficulty you like. Playing easy levels can train your brain, and trying expert levels can really hone your mind. Our app has some hints to make the game easier. You can use these features or complete the challenge without help.

How to play:
1. Use the exclusion method to fill in first to determine the row or column of the number
2. Prefer to fill the row or column with the least space
3. After applying the above two principles to fill in the rows and columns that can be determined and have the least space, other rows or columns have identifiable numbers, and the first two principles are used to fill in the spaces.

Using this technique is basically filling in certain numbers one by one, without having to try the possibilities. There is only one answer. The key is to find a breakthrough. Good luck here.