Renban or Ren_an (Ambiguity Puzzle)
(Eingestellt am 11. Dezember 2025, 03:41 Uhr von tallcat)
A few months back, I took part in a SudokuCon twitch stream with Palfly Kampling where I solved a puzzle of his with a renban variant (called "Knapp Danenban lines"). The idea of a renban/knapp danenban line ambiguity puzzle came up in the stream - and it was something I decided to make. It was more challenging than I had first thought it would be! Happy solving!
Normal Sudoku rules apply
Pink lines are either renban or knapp danenban renban (KDR). The solver must deduce which are which.
Renban: Pink lines must contain a set of consecutive, non-repeating digits in any order.
Knapp Danenban Renban (KDR): Lines are almost renbans and contain a set of non-repeating consecutive digits in any order except one digit (not an extreme digit) is missing. Example: 1523, 467, and 7634 are valid but 1431, 1265, and 5243 are not valid.
Can be found at f-puzzles or Sudokupad
Normal Sudoku rules apply
Pink lines are either renban or knapp danenban renban (KDR). The solver must deduce which are which.
Renban: Pink lines must contain a set of consecutive, non-repeating digits in any order.
Knapp Danenban Renban (KDR): Lines are almost renbans and contain a set of non-repeating consecutive digits in any order except one digit (not an extreme digit) is missing. Example: 1523, 467, and 7634 are valid but 1431, 1265, and 5243 are not valid.
Can be found at f-puzzles or Sudokupad
Lösungscode: Column 6 (top to bottom, 9 digits)
Zuletzt geändert am 11. Dezember 2025, 05:12 Uhr
Gelöst von twototenth, Bjd, bansalsaab, arbitrary, PierreTombal, jmw, SKORP17, cornish-john, War, tangobunni, Isael, Djirt, widjo, zeniko, henrypijames, Exigus, bboom, Playmaker6174, karlmortenlunna, Myxo, Bellsita
Kommentare
am 23. Dezember 2025, 08:16 Uhr von Playmaker6174
Cool opening work and a rather narrow solve afterwards till the end :)
am 14. Dezember 2025, 03:29 Uhr von Exigus
Really cool that this can solve at all. Some very interesting deductions. Thanks!
am 12. Dezember 2025, 20:59 Uhr von Djirt
Спасибо Tallcat, великолепная работа!
am 11. Dezember 2025, 17:38 Uhr von PierreTombal
Very nice. Appeared pretty much impossible from reading the rules, but turned out to be fairly approachable after a not so easy start.
