Fill in the empty cells of a 9x9 grid with number values from one to nine in the elegant digital format of classic Sudoku. You will use logic and deduction to arrange elements without repetition in each row, column and 3x3 block. Choose adjustable difficulty levels, use the notes feature or helpful hints to find the right solutions, and earn game points. For completely error-free completion of difficult sectors, completing difficult puzzling tests in a minimum time and achieving a winning moment without a single hint, you are awarded bonuses. A good visual reaction will help you detect hidden single digits in time. Spatial thinking will allow you to effectively analyze intersecting number series.