Colour Coordinated Differences
(Published on 22. October 2025, 13:27 by marty_sears)
- A pink arrow contains two consecutive digits.
- A green arrow contains two digits with a difference of at least 5.
- On a black arrow, one digit is double the other.
Rules:
Normal sudoku rules apply.
The two digits on an arrow give the coordinates of a particular target cell somewhere in the grid. The digit on the arrow's shaft indicates the target cell's row, and the digit on the arrowhead indicates the target cell's column. The difference between the two digits should be placed into the target cell. No two arrows target the same cell.
Also:
Solution code: Row 9 from left to right
Comments
today, 00:54 by Piatato
Very neat solvepath, thanks!
Marty: very happy you enjoyed it. I shouted you (and your original puzzle) out in my comment on this evening's feature on Youtube :)
yesterday, 23:21 by RoystonDA
Loved this! Creative way to incorporate indexing with some classic variant rules. The break in for it took me some time to understand but was a fun discovery.
My solve time was a little faster than I expected, so I've marked this as 2*. Keep up the fun work dude!
on 24. October 2025, 18:27 by razor2811
Absolutely Beautiful Puzzle, but that break-in is definitely 3 Stars of difficulty not 2.
on 24. October 2025, 14:46 by davidz32z
Wow this one was incredible! Some very new logic for me that I think is worth 3 stars, but what an incredible (new?) rule set!
on 23. October 2025, 17:44 by Olive
Great puzzle, thank you :)
on 23. October 2025, 12:50 by Franjo
Funny indexing ruleset! Love this. Thank you very much for creating and sharing another beautiful puzzle.
on 23. October 2025, 10:30 by ThatUnfunPerson
Like most marty_sears puzzles it seems impossible at first, but is surprisingly approachable. Especially when you realise the arrows are kropki dots and german whisper lines with some extra pizzazz.
Everything falls into place once you start thinking about the possible locations and values of target cells.
on 23. October 2025, 10:18 by mscha
Wonderful puzzle with a brand new ruleset. This is one of those puzzles that seem impossible, but once you figure out how to get started, all puzzle pieces fall in place nicely.
on 22. October 2025, 22:28 by bboom
Very cool puzzle. The color scheme works very intuitively, since the green and pink arrows are effectively just very short whisper and renban lines.
on 22. October 2025, 21:00 by elyas_targ
A very pleasing puzzle, I really enjoyed starting with the geometric coloring of possible target cells and working from there.
on 22. October 2025, 19:29 by psych
incredibly creative, simply brilliant!!
on 22. October 2025, 18:37 by CitrusGremlin
Do the targeted cells have to be on the line emanating from the arrow? Can targeted cells be on arrows themselves?
Marty: A target cell can be anywhere, including on the arrow that is targeting it :)
