[N]ine [B]oxes
(Published on 14. July 2022, 09:20 by Gliperal)
Normal Sudoku rules apply. The yellow cells create a fortress; each is greater than all orthogonally adjacent unshaded cells. The purple lines are renban; each one contains a sequence of consecutive digits in any order. No two digits on the same white line may be consecutive. No two digits on the same black line may have a 1:2 ratio. Digits may repeat on white/black lines if allowed by other rules.
Note: The puzzle has been modified slightly from its original version, which may be found here. The solution is identical.
Play on CtC: [normal] [faded]
Play on Penpa: [normal] [faded]
Play on f-puzzles: [normal] [faded]
Solution code: Row 1, Row 9
Comments
on 25. February 2023, 14:29 by Phistomefel
That puzzle is phenomenal! It is very resistant, but this makes discovering the actual solution path all the more satisfying. Thank you so much for this beauty, gliperal!
on 16. July 2022, 08:18 by 85392
Update: Please ignore my suggestions. Looking back at my pictures, I completely forgot about the fortress rule.
on 16. July 2022, 03:03 by Gliperal
@85392 I'm not sure about that. 1r8c1 should have problems elsewhere in the grid. Can you provide a screenshot?
on 16. July 2022, 02:49 by 85392
Hi! The last step has ambiguity issues. The accepted solution has a 3 in r8c1, but a 1 in r8c1 leads to another valid solution, although with an invalid code. The anti-black kropki lines should be written as uuvm to prevent this ambiguity.
on 14. July 2022, 22:34 by Gliperal
reverted to a version without the crossing black lines, which were confusing to solvers
on 14. July 2022, 22:34 by Gliperal
@SKORP17 Die Ziffern auf einer Linien dürfen sich dabei wiederholen. Eine Folge 1 4 2 5 wäre nicht erlaubt.
on 14. July 2022, 20:14 by SKORP17
was ist mit gleichen Ziffern auf den weissen Linien, sind die erlaubt ? Und wie ist das gemeint
No two digits on the same white line
bezieht sich das nur auf benachbarte Ziffern oder auf alle vorhandenen Ziffern (eine Folge 1 4 2 5 wäre demnach nicht erlaubt?)
Und wie das mit den kreuzenden Schwarzen Linien gemeint ist, versteh ich auch nicht.
on 14. July 2022, 20:11 by Gliperal
clarified rules
on 14. July 2022, 15:01 by JayForty
Fantastic and tricky break-in where everything worked beautifully together. From there it flows really nicely and quickly. Thank you!
