Sudoku
Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid with digits, so that each column, each row, and each of the nine 3x3 sub-grids that compose the grid contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which has a unique solution.
Completed puzzles are always a type of Latin square with an additional constraint on the contents of individual regions.
It might be hard to keep everything in mind, so this app allows you to make marks just like if you were solving a paper puzzle. In addition, you can cheat a little and use a hint.
The app supports Light and Dark theme for your convenience