Classic Sudoku Master

Sleek dark-themed classic 9×9 sudoku featuring Easy, Medium and Hard difficulty tiers. Abide by standard rules: digits 1-9 must appear only once in each row, column and 3×3 subgrid. A built-in timer records solving speed, and hints are available when you get stuck. The low-brightness calm UI eases eye strain, perfect for sharpening focus and logical thinking while you deduce number arrangements in spare time.