1. Fill in the empty cells of the Sudoku grid following the standard rules: each row, column, and 3x3 box must contain all digits from 1 to 9 without repetition.
2. Start by scanning rows, columns, and boxes for missing numbers and use process of elimination to determine possible candidates.
3. For example, in row 1, the missing numbers are 3, 4, 5, 7, 8; check column and box constraints to place them correctly.
4. Continue this process systematically across the entire grid, filling in cells with only one possible value first.
5. Use pencil marks if needed to track potential candidates until a cell can be definitively filled.
6. Repeat steps 2–5 until the entire grid is completed with no contradictions.
7. Verify the solution by ensuring every row, column, and 3x3 box contains digits 1 through 9 exactly once.
Parent Tip: Review the logic above to help your child master the concept of printable junior sudoku.
