Normal Sudoku rules apply.
The big gray line is a palindrome and must read the same forwards and backwards.
Digits along an arrow sum to the digit in the connected circle.
No algebra is required :)
Solution code: Row 1
on 6. August 2024, 22:48 by fortunia27
The hour simply flew by! Really enjoyed it, a great coloring puzzle
on 6. August 2024, 10:31 by Wuschel
Very nice, but I agree on 3*. Great deductions throughout the solve :)
on 6. August 2024, 10:10 by MarkSud
Took me 45mins. I think it is a 3 star if I am honest.
on 5. August 2024, 22:51 by Tomf1sh
I thought this was really stunning. I'm a beginner and so I found it quite tough and hit several roadblocks - but I never felt like giving up, because I always felt like a breakthrough must be around the corner. Took me around an hour and a half. Would love to see how long it takes pros!