Focal Points
(Published on 26. November 2025, 16:00 by TrivialHomology)
Rules
- Standard Sudoku rules apply. Place the digits 1-9 once each in every line, column and 3×3 box.
- Anti-Knight: Cells a chess-knight's move apart cannot contain the same digit.
- Renban: Digits on a purple line form a set of consecutive, non-repeating digits in any order.
- Nabner: No two digits on a golden line are consecutive or equal.
- Region-Sum: Box borders separate blue lines into segments. Digits on different segments of the same line sum to the same total (but this total may differ between lines).
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Click on the picture to open the puzzle in Sudoku-Pad
Solution code: The digits in the 9th row in reading order:
Solved by jalebc, BULL-TT, jseng, EmX68, SKORP17, SamWHE, walid_tun, by81996672, luuu, Krisonium, Corey115, jordanza, Ryaffio, Silentdodo, MB_Cyclist, BenClancy, Tacocat, AnomanderKarsa, Golden_Feather, bansalsaab, BellBear, hungkenchanlee, snoswal, x3y2z1, mezkur7, hurrdurr, Soya, paranoid, Asphodel, pescirope
Comments
Last changed on 1. December 2025, 10:52
on 29. November 2025, 06:43 by Tacocat
Very elegant! There is some beautiful and original logic, the constraints work nicely together. Between 3 and 4 stars for me, some deductions are a bit tricky (edit: the setter estimate was 3 stars). The break in is great and the challenge remains more or less constant until the end.
I hope more people try this puzzle, it deserves some recognition!
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Reply by TrivialHomology: Thank you for the kind comment! I was unsure about the difficulty, I think the break-in is more on the 3*-level, but there are quite a few more deductions to be made afterwards, so I think 4* is also justified.
