The full logical solve of the hard mini sudoku for September 1 to September 7, 2026, 9 × 9. 55 steps, 3 techniques, no guessing. Step through it, or jump to any step below.
In the shaded box, 9 fits only in the marked cell.
In the shaded box, 3 fits only in the marked cell.
In the shaded box, 6 fits only in the marked cell.
In the shaded box, 4 fits only in the marked cell.
In the shaded box, 4 fits only in the marked cell.
In the shaded box, 7 fits only in the marked cell.
In the shaded box, 7 fits only in the marked cell.
In the shaded box, 7 fits only in the marked cell.
In the shaded box, 9 fits only in the marked cell.
In row 6, 1 fits only in the marked cell.
In column 6, 1 fits only in the marked cell.
In column 6, 5 fits only in the marked cell.
The marked cell sees every digit except 6 in its row, column and box, so it must be 6.
In the shaded box, 6 fits only in the marked cell.
In the shaded box, 9 fits only in the marked cell.
In the shaded box, 4 fits only in the marked cell.
In the shaded box, 5 fits only in the marked cell.
In the shaded box, 7 fits only in the marked cell.
In the shaded box, 2 fits only in the marked cell.
In the shaded box, 7 fits only in the marked cell.
In the shaded box, 2 fits only in the marked cell.
In the shaded box, 5 fits only in the marked cell.
In the shaded box, 2 fits only in the marked cell.
In the shaded box, 1 fits only in the marked cell.
In the shaded box, 7 fits only in the marked cell.
In the shaded box, 2 fits only in the marked cell.
In the shaded box, 6 fits only in the marked cell.
In the shaded box, 6 fits only in the marked cell.
In the shaded box, 3 fits only in the marked cell.
In the shaded box, 8 fits only in the marked cell.
The outlined cells are the only places for 5 in their box, and they all sit in column 9. So the rest of column 9 can’t hold 5. Now 5 fits in only one cell of row 8: the marked one.
In the shaded box, 8 fits only in the marked cell.
In the shaded box, 8 fits only in the marked cell.
In the shaded box, 8 fits only in the marked cell.
In the shaded box, 8 fits only in the marked cell.
In the shaded box, 8 fits only in the marked cell.
In the shaded box, 3 fits only in the marked cell.
In the shaded box, 2 fits only in the marked cell.
In the shaded box, 9 fits only in the marked cell.
In the shaded box, 1 fits only in the marked cell.
In the shaded box, 1 fits only in the marked cell.
In the shaded box, 3 fits only in the marked cell.
In the shaded box, 9 fits only in the marked cell.
In the shaded box, 4 fits only in the marked cell.
In the shaded box, 2 fits only in the marked cell.
In the shaded box, 5 fits only in the marked cell.
In the shaded box, 3 fits only in the marked cell.
In the shaded box, 5 fits only in the marked cell.
In the shaded box, 1 fits only in the marked cell.
In the shaded box, 1 fits only in the marked cell.
In the shaded box, 5 fits only in the marked cell.
In the shaded box, 5 fits only in the marked cell.
In the shaded box, 4 fits only in the marked cell.
In the shaded box, 3 fits only in the marked cell.
In the shaded box, 4 fits only in the marked cell.