▻Sudoku

- Choose a difficulty or start the daily challenge to begin a new 9x9 puzzle. - Place numbers 1 to 9 so each row, column, and 3x3 box contains all digits without repeats. - Use pencil marks to note candidates, then eliminate them as you deduce with logic. - Toggle error checking or a mistake limit to learn patterns while avoiding random guesses. - Tap and hold for quick notes, undo missteps freely, and use hints sparingly when stuck. - Finish the grid to record your time, build streaks, and earn achievements.