Sub-Zero
(Published on 12. March 2026, 15:25 by M.K.)
Rules:
- Normal sudoku rules apply, with one exception: Place the digits 0-8 instead of 1-9.
- Digits in a cage cannot repeat and sum to the small number in its corner.
- The 3x3 box borders divide blue lines into segments – each segment on an individual line has the same sum.
- Every digit that stands below a 0 counts as negative regarding summation.
- There are 8 different sub-zero digits in the grid – no row, column, or 3x3 box can have more than one sub-zero digit.
Link: SudokuPad
Solution code: Row 5 + Column 1
Last changed on on 20. March 2026, 13:58
Solved by tiuhto, TeamSchmidt, SKORP17, GentlemanJim, SirWoezel, dzamie, oskode, PuzzlePatzer, Statistica, cryptique, bleppie, gUBBLOR, Jasura, karlmortenlunna, Crul, jkuo7, mew_rocks, y00j1n, Khatru, bhambells, QuiltyAsCharged, P12345, madhupt, HonkIfYouLoveBeer, Senjo, Md88keys, SirRanch, Morisenseiisgod, abinchen, seaweed, mcs131313, Druselbert, OGRussHood, Ratzfaz
Comments
on 26. March 2026, 13:20 by M.K.
Watch Mark solve this puzzle on CTC:
https://www.youtube.com/watch?v=jtQcQ-Y8Ur0
on 25. March 2026, 12:18 by QuiltyAsCharged
Fun and creative puzzle!
on 25. March 2026, 11:49 by bhambells
Nice puzzle, but no need for such a long solution code..
on 19. March 2026, 18:38 by bleppie
Nice concept, a few tricky bits, smooth solve, thanks!
on 13. March 2026, 21:43 by dzamie
That was really interesting! Easier than I had anticipated, but certainly quite challenging. There are a lot of interesting and unique deductions that get made.
(plus, I had fun pretending to levitate shapes above themselves to look for negatives)
