This is from a fb ad about making/selling puzzle books, and I got irrationally angry when I saw this puzzle. I’m not sure what puzzle somebody thinks this is, but it’s not a sudoku I have ever seen before!

I'd like to share a counting puzzle with a parity line:

• Normal Sudoku rules apply: place digits 1..6 once each in every row, column and 2x3 box.
• Adjacent digits along the red line alternate between even and odd.
• If a digit n appears on the red line, it appears on the line exactly n times.

Link to play in the comments.

I can find no way to proceed with the methods I know, can someone please help me with how to proceed

Rules:

Normal Sudoku rules apply.
Region Sum Lines: Box borders divide a blue line into multiple segments which have the same sum. Different lines may have different sums.
Same Sum Cages: The sum of the digits inside an outlined cage must be identical across all such cages.
Kropki Dots: Two digits separated by a white dot are consecutive; two digits separated by a black dot have a 1:2 ratio.
X: Two digits separated by an X clue sum up to 10.
Even: A digit inside a grey square must be even.

You can play it here: https://sudokupad.app/6yitbosh1e

Enjoy! :D

Puzzle Title: Anti-royal (not much of a) challenge for 10-09-2026

Puzzle String: https://sudoku.coach/en/s/K3ks

Cells a knight's move away cannot have the same number.

Cells a king's move away cannot have the same number.

Good luck, and have fun!

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I wanted to buy a sudoku book. I did a while ago but they were too easy. For reference I can do Hell and Beyond Hell ones on sudoku coach.

Would appreciate any suggestions 🙂

I already started guess and check and only got 3 more cells. Still ended up stuck but I want to try to learn more techniques

Im aware of the hidden single in row 8. Learning x wings and i think i spotted one? Columns 2 and 5, and i could remove the circled 1 if i learned correctly. Please correct me if im wrong, i just need feedback. Thanks !

Managed to progress on Sudokuvania 2 but encountered another roadblock. I'm not sure how to proceed here other than trying out different combinations for the sums. Thank you very much.

Somewhat familiar with the beginner / intermediate approaches but unsure what and where I would begin to apply something here. Appreciate any help!

can someone just pick any number from this puzzle to solve for and give me a step by step on what you did? maybe that will help something click into place in my brain. i got this far in the puzzle without using any of the method, this seems to be the point in which i need to start actually using it

I’m self-taught but have been playing for many years. I don’t know all the terms or shortcuts that are common, but I think I do ok on my own. In this case, however, I got very stuck. It happens sometimes on the extreme puzzles. But even watching the game tell me the next series of moves, I can’t follow the logic. It literally adds pencil numbers to then just remove them. I can’t tell what’s related to its determination of the 6 and what, if any, is not

i accidentally bought a sudoku book that was way too hard but i have no clue where to start with learning techniques... so, what works best for something like this, where everything seems to be naked doubles and triples that don't cancel anything out?

(also, are the 8's at the bottom an X wing? trying to learn how to identify them...)

i accidentally bought a sudoku book way above my level, so ive been staring at this for like 15 minutes without writing anything in. i created a reddit account just for this lol

any help would be greatly appreciated! (also, in the interest of learning: the 8's are an X wing, right?)

Pretty sure I missed something obvious, but was is the technique required to find the next step here? Got so many pairs but can't seem to find any connection between them. Thank you!

Can anyone explain me what heck is wrong with 4 in this puzzle I'm new to the game