Almost Correct
(Eingestellt am 23. August 2025, 16:53 Uhr von TVDK)
This puzzle was set for the first round of Agent's Puzzle Agency Championship. The prompt for this round was to create a Knapp Daneben puzzle.
Normal 9x9 sudoku rules apply.
Yin Yang: Shade some cells such that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected and no 2x2 area is fully shaded or unshaded.
Knapp-Daneben: Clues in the shaded area have a value that is off by +-1. E.g. a killer cage with a clue 15 would actually sum to 14 or 16, or an X sums to 9 or 11. (Clues in the unshaded area are completely normal)
Each clue is contained within a single shading/colouring.
Killer: Digits in a cage sum to the total given.
Arrow: Digits along the arrow sum to the total in the bulb.
XV: Digits separated by a V sum to 5. Digits separated by an X sum to 10. Not all XVs are given.
Clarification: An arrow and its bulb are within the same shading. A Knapp Daneben arrow has a bulb that is +-1 from the sum of the digits on the arrow. Different arrows from the same bulb can have different sums.
Sudokupad:
https://sudokupad.app/y2ko0a3u6j
Lösungscode: Digits in the shaded region (Knapp-Daneben) in row 4.
Zuletzt geändert am 25. August 2025, 10:06 Uhr
Gelöst von Agent, Niverio, mathpesto, beansontoast_, Calesch, Joyofrandomness, DanishDynamite, oshitada, Cane_Puzzles, MattYDdraig, damasosos92, AvonD, vitaminz, Crul, Zibl, Elliott810, polcat, galium_odoratum, ... SamWHE, Stephan60H, steinchen, arauwer, Dacmon, WvdWest, bulguline, Julianl, NEWS, QuiltyAsCharged, pmatos, tkn, GWilliams00, mcs131313, ariwizzard, arctan, Altynbek , pepe74287, VolpeRosso
Kommentare
am 11. September 2025, 12:09 Uhr von VitP
seems unreasonable to call this a level 3. the middle game is much harder than that
Zuletzt geändert am 28. August 2025, 19:59 Uhram 28. August 2025, 04:45 Uhr von mariban
The rules are still unclear!
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Can you elaborate on how and where the rules are still unclear?
am 26. August 2025, 20:36 Uhr von Flinty
Lovely puzzle!
am 25. August 2025, 10:06 Uhr von TVDK
Clarified rules
am 25. August 2025, 08:59 Uhr von tim_1898
Like already mentioned, i feel like arrows would need some more explanation how it is affected by the shaded area.
am 24. August 2025, 18:38 Uhr von Snookerfan
Great puzzle! Thank you
am 24. August 2025, 18:36 Uhr von greemi01
wow!
am 24. August 2025, 15:46 Uhr von Franjo
Wonderful puzzle, though I had some trouble with the ruleset. For example, if an arrow is (fully) shaded, then ONLY the circle‘s value is Knapp Daneben, but not the values on the arrow. Well, this wasn’t obvious for me when I started the solve… Anyway, thank you for creating and sharing this lovely puzzle.
am 23. August 2025, 18:47 Uhr von mathpesto
Had a lot of fun with this one!
am 23. August 2025, 18:46 Uhr von TVDK
Fixed solution code.
am 23. August 2025, 17:09 Uhr von Agent
Great fun and very smooth!