Eight Lines
(Published on 1. March 2024, 09:00 by Flinty)
Normal Sudoku Rules Apply:
Each row, column and 3x3 box contains the digits 1-9.
Eight Lines:
Each line consists of one or more contiguous groups of cells, each of which sums to 8. These groups of cells cannot overlap. Digits may repeat on lines and even within sums.
This puzzle was originally created for the CTC Discord February Setter Prompt "Just One Thing". If you are familiar with the constraint 'Ten Lines', it's essentially that but modified.
Example line added to the image below.
The Example Line is Split into: 323.8.17.521 with each segment summing to 8.
Solution code: Digits from Column 6
Comments
on 29. May 2025, 08:00 by Richard
Hi Flinty!
Forgive me my impatience, but is it still possible to respond to my question of last week (in the hidden comment)?
Flinty: Hey Richard, apologies, I missed your comment. The hex is #d5cab1 looking forward to playing your puzzle. :)
on 16. November 2024, 07:15 by Richard
Very nice! Having sums of 8 really add different techniques, conclusions and deductions compared to the 10 lines. Both variants are on my list of SVS-potentials. Thx!
on 3. March 2024, 20:21 by silent_rob
I really enjoyed this - thanks so much! Took me a little while to get a handle on the constraint but after I got the break-in the rest flowed really smoothly.
on 3. March 2024, 17:58 by phs
Great idea for a new constraint, & very well used, not combined with anything else. I was a bit afraid when looking for a starting point but I eventually enjoyed the puzzle very much. Thanks for sharing!!
on 1. March 2024, 18:48 by sacklunch
Really fun puzzle! I ran into trouble a few times with some incorrect assumptions, that's always a good learning opportunity. :) Thanks for setting and sharing!
on 1. March 2024, 16:44 by goodcity
Fresh logic on sum lines !
on 1. March 2024, 13:43 by wuc
Great puzzle. Rules new to me. Nice logic start to end. Thx.
on 1. March 2024, 12:15 by Snookerfan
Fun puzzle! Thank you
