Validate a 9×9 Sudoku grid. Paste 9 lines of 9 digits (0 or . for empty), or click a cell and type a digit. Row, column and 3×3 box conflicts are highlighted as you go.
Click a cell and press 1–9 to fill it, or Backspace to clear. Arrow keys and Tab move between cells.
Valid so far (in-progress). No conflicts detected yet.
marduc812
© 202620260810_523d094