Ultimate Sudoku is a classic puzzle game where you fill the grid with 1 to 9 so every row, column, and box is complete without repeats.
In Ultimate Sudoku, tap a cell and choose a number that fits the row, column, and 3 by 3 box. Use notes to track candidates and clear them as you progress. Start with easier rows and columns, then scan for singles and pairs to sharpen your logic. Turn on hints when needed and pause the timer anytime.
Tip: Sweep each row and column for hidden singles first to unlock quick number placements.
