Normal 6x6 Sudoku rules apply.
Digit Delivery Service:
Each complete row can be interpreted as a digit delivery instruction.
The difference between the 1st and the 2nd digit indicates a row.
The difference between the 3rd and the 4th digit indicates a column.
The difference between the 5th and the 6th digit indicates a digit.
Place the digit in the tile with the indicated row and column number.
Example: if a row reads “521634” you have to insert a 1 into r3c5.
Deliver your digits to the positions marked with squares.
Solution code: Digits in column 6 top to bottom
on 24. May 2026, 06:40 by marajade
Very cool ruleset, I really enjoyed figuring this out!
| Difficulty: | ![]() |
| Rating: | N/A |
| Solved: | 5 times |
| Observed: | 1 times |
| ID: | 000SZ4 |