Same rules, smaller grid: six digits, one through six, across a 6×6 board split into boxes of two rows by three columns. Every row, column, and box still needs each digit exactly once — nothing else changes. It plays in a few minutes rather than twenty, which makes it a good fit for kids just learning the idea, for a first sudoku ever, or for whenever you want a finish line you can actually see. When the smaller grid stops being a challenge, the full 9×9 board is one click away, with the same one-solution guarantee and the same honest difficulty labels from Easy through Expert.