FUll Rankillers
(Published on 15. February 2026, 02:00 by Las4one)
Inspired by udukos's X-Sums killer sudoku #2.
Rules:
- Sudoku: Place digits 1-9 in each row, column and region exactly once.
- Full Rank: The digits on columns and rows, read in both directions, make a total of 36 nine-digit numbers. Cells outside the grid have a value equal to the rank in ascending order among those 36 numbers for the indicated column or row in the direction of the cell.
- Killer: Digits may not repeat within a cage. A double-digit clue inside of a cage prevents both of its digits from appearing anywhere else in the same cage (this means 11, 22 and 33 may not appear in a cage, and 8 and 18, for example, may not appear in the same cage). A double-digit clue may include zero.
Learned a way to make the conflict checker work properly.
Enjoy!
Solution code: The 9-digit number of rank 23.
Comments
on 16. August 2026, 16:45 by yellow
great puzzle
on 28. June 2026, 06:56 by Silverstep
The crux deduction got me stuck for days -- that doesn't happen very often! Five stars for sure.
on 10. May 2026, 19:29 by Fool on Hill
Magnificent.
on 19. March 2026, 01:16 by QuiltyAsCharged
Whew! Wow. Goodness gracious.
on 5. March 2026, 09:39 by Piatato
Amazing! So many clean, clever and very rewarding pieces of logic! Brilliantly constructed :D
on 3. March 2026, 00:09 by BloodbuzzCorio
This is a next level puzzle - certainly using some logic I have never encountered before. Very difficult but once you do see the steps they are fair and extremely rewarding. Thanks for setting and sharing this Las4one!
on 25. February 2026, 16:36 by cyddrdrd
Fantastic one!
on 16. February 2026, 00:04 by Myxo
Wow! Brilliant!
on 15. February 2026, 02:30 by h5663454
Nice!੭ ᐕ)੭*⁾⁾
