Tip: matching digits and the row, column and box light up to help you spot conflicts.
Fill every row, column and 3×3 box with the digits 1–9 — each digit appearing exactly once in each. Solve the whole grid to win!
💡 Hunt for rows, columns or boxes that already have lots of numbers — the missing few are the easiest to pin down.
📜 Did you know? Sudoku was invented by American Howard Garns in 1979 as "Number Place" for a Dell puzzle magazine, then renamed and popularised in Japan by the Nikoli company in the 1980s.