Logic Masters Deutschland e.V.

grow so natural, i eat my kale

(Eingestellt am 17. Februar 2025, 02:30 Uhr von aqjhs)

I made this puzzle following Scojo's prompt to use negator modifiers along with sandwich clues.

  • Normal sudoku rules apply.
  • Divide the grid into two orthogonally connected regions such that no 2x2 area is completely contained in a region. All cells in one region will have a value -D, where D is the digit on the cell, and all cells in the other region will have a value of D.
  • Cells marked with a circle contain a digit equal to the count of the other (up to 8) neighboring cells that are in the same region.
  • Cells marked with a square contain a digit equal to the count of the (up to 8) neighboring cells that are in the other region.
  • Clues outside the grid show the value sum of all cells strictly in between the digits 1 and 9 in the direction of the row/column of the clue.
  • Along a dark teal line any three consecutive cells have values in different residue classes modulo 3.
  • Cells joined by a dark teal dot have values in the same residue class modulo 3. Not all possible dots are given.

Online in Sudokupad

Note: The residue classes modulo 3 are

  • [0] = {⋯, -9, -6, -3, 0, 3, 6, 9, ⋯}
  • [1] = {⋯, -8, -5, -2, 1, 4, 7, ⋯}
  • [2] = {⋯, -7, -4, -1, 2, 5, 8, ⋯}

See also:

Lösungscode: Column 8 with a dash for each region border, top to bottom. (ex. 123-456-789)

Zuletzt geändert -

Gelöst von Briks, bansalsaab, tuturitu, mihel111, Azumagao, Scojo, palpot, roflsalot, lmdemasi, jarsp, y00j1n, mse326, SenatorGronk, Isael, Paletron, FierceHAuCl4, madhupt, Asphodel, Norkas, FlowJo, elpadrinoIV, amarins, steeto
Komplette Liste

Kommentare

am 23. Februar 2025, 16:31 Uhr von elpadrinoIV
Awesome puzzle. It's quite hard, but no particular clue seemed impossible. It was just a matter of asking the right questions at the right time... and that took me quite a while, for each question.
224 minutes completely worth it, thanks so much for setting!

am 21. Februar 2025, 06:55 Uhr von Norkas
Very intricate and fun puzzle that took me a bit to get started and then went very smoothly. I love that you got the whole set of 0 clues to work so well.

am 20. Februar 2025, 20:24 Uhr von madhupt
This is such a brilliant puzzle! Absolutely fabulous but very hard, at least for me. The starting digits are simple and then the next digit in the corner comes after a million years. Or maybe I did it wrong but I can’t see any other solve path other than the one I followed. All the three constraints - yin yang, modular and sandwich go hand in hand. I did not find the need to colour, though, except the YY part, of course.
This is such a fit candidate for a CtC solve by Simon. If he does it, it has all the potential to be another feature-length fare. @adjhs, you are a genius!

am 19. Februar 2025, 19:30 Uhr von SenatorGronk
This one was brutal. Great job!

am 19. Februar 2025, 10:06 Uhr von mse326
I should not have started this at 2 in the morning. Work will suck. Worth it to finish though.

am 18. Februar 2025, 16:20 Uhr von jarsp
Very cool puzzle overall and quite a lot of fun!

am 17. Februar 2025, 15:55 Uhr von mihel111
Incredible puzzle. I gave it 5*. It is so easy to get lost in the teal lines.
Very satisfying at the end.
Very well done.

am 17. Februar 2025, 08:06 Uhr von Briks
Very interesting puzzle. I think the most colourful one I did. I think it is not solvable without visualisation with colours. Liked it very much!

Schwierigkeit:5
Bewertung:100 %
Gelöst:23 mal
Beobachtet:1 mal
ID:000LMC

Rätselvariante Mathematikkenntnisse

Lösung abgeben

Lösungscode:

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