Quiet Investigation
(Published on 12. September 2025, 08:51 by oskode)
Rules:
- Sudoku: Fill all rows, columns and marked 3x3 regions with the digits 1-9 without any repeats.
- Anti-Knight: Cells separated by a knight’s move in chess may not contain identical digits.
- German Whispers: Adjacent digits along a green line have a minimum difference of 5.
- Palindromes: Digits along a grey line read the same from either direction.
- Black Kropki: Digits separated by a black dot are in a 1:2 ratio.
Click here to play online!
Ratings and comments are very much appreciated. Thank you for playing!
Solution code: The digits in column 9, from top to bottom
Solved by by81996672, Piff, Felis_Timon, Simon Yuan, dickey, Fizz, LabRat, dkfan9, jalebc, pseudoku, jadezki, Zibl, Kigor, Joyofrandomness, SKORP17, giladooshlon, briansometimes, brimmy, jnmh, Graphael, NicoD, ... lianarox, Andrewmi3, gxorgx, tuckerbucket, BlackWolf, TroublesomeOrca, Bulkystapler, jordanza, Crul, ClarityC, olegavibe, b413x, apendleton, keenbowl, Exigus, Starlight, krytolandros, nikka240
Comments
yesterday, 20:40 by Exigus
Really nice use of the constraints. Loved it. Thanks!
on 12. September 2025, 22:53 by briansometimes
A colorado puzzle with my favourite restrictions, what a treat!
on 12. September 2025, 19:26 by Zibl
Great puzzle! Thank you!
