The full logical solve of the hard mini sudoku for September 15 to September 21, 2026, 9 × 9. 57 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, 2 fits only in the marked cell.
In the shaded box, 8 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 column 5, 7 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 column 5, 5 fits only in the marked cell.
In column 5, 1 fits only in the marked cell.
The marked cell sees every digit except 5 in its row, column and box, so it must be 5.
The marked cell sees every digit except 3 in its row, column and box, so it must be 3.
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. The outlined cells are the only places for 9 in their box, and they all sit in column 9. So the rest of column 9 can’t hold 9. That leaves the marked cell with only one digit it can hold: 4.
The marked cell sees every digit except 5 in its row, column and box, so it must be 5.
The marked cell sees every digit except 9 in its row, column and box, so it must be 9.
In the shaded box, 9 fits only in the marked cell.
In column 4, 9 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, 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, 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, 4 fits only in the marked cell.
In the shaded box, 4 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, 9 fits only in the marked cell.
In row 8, 7 fits only in the marked cell.
In column 2, 3 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, 5 fits only in the marked cell.
In row 7, 1 fits only in the marked cell.
In row 7, 2 fits only in the marked cell.
In column 1, 3 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, 2 fits only in the marked cell.
In the shaded box, 3 fits only in the marked cell.
In the shaded box, 7 fits only in the marked cell.
In the shaded box, 4 fits only in the marked cell.
In the shaded box, 1 fits only in the marked cell.
In the shaded box, 2 fits only in the marked cell.
In the shaded box, 3 fits only in the marked cell.
In the shaded box, 1 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, 2 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, 1 fits only in the marked cell.
In the shaded box, 1 fits only in the marked cell.
In the shaded box, 2 fits only in the marked cell.