The online game Sudoku Zen is a classic number puzzle with a clear interface and easy controls. You need to fill in the empty cells with numbers from 1 to 9. The main rule: numbers should not be repeated in the same row, column or small 3x3 square. The game has several difficulty levels, so it is suitable for both beginners and experienced players. This is a great way to practice logic and attentiveness without being distracted by unnecessary details. Choose the appropriate level, analyze the playing field and try to fill the entire grid without errors. The game helps develop thinking and allows you to simply and profitably spend time solving digital problems.