Sudoku Master - Classic Puzzle

Classic sudoku - a numbers puzzle.
The goal of the game is to fill the 9x9 field with numbers from 1 to 9 so that they do not repeat in the same column, row and square.
This game trains the mind, develops logical thinking and attentiveness.
Sudoku Master has several levels, from beginner to expert! Upgrade your Sudoku solving skills and become a Sudoku Master free!

How to play

The goal of the game is to complete levels from beginner to master in order to pump your rating and reach the pinnacle of Sudoku mastery.
A field with 9x9 cells consists of 9 squares, in each of which you need to enter numbers from 1 to 9. But several rules must be observed:
1. Numbers should not be repeated in one square.
2. Numbers should not be repeated in the same column.
3. Numbers should not be repeated in one line.
To make it easier to find a solution, you can use notes and write several possible options in one box, and then weed out the incorrect ones.
You can also use a hint that will put a number in the highlighted cell of the field.
If you put a wrong number on the field, you can erase it and continue the game until the victory ends.
Good luck with your Sudoku!