Rules:
Regular sudoku rules apply; place the digits 1-9 in every row, column, and 3x3 box exactly once each.
For a circle and line of the same color, two adjacent digits along the line differ by or sum to the digit in the circle.
No two circles contain the same digit.
Solve online:
Solution code: Row 8 (left to right, 9 digits, no spaces)
on 12. June 2024, 21:44 by fractalminding
I've finally solved this sudoku! It was a little difficult to figure out the rules. But when I understood them, it was pleasant and interesting to solve. Super! Thank you.
on 11. June 2024, 03:31 by bansalsaab
I had to use couple of small bifurcations but after that it was fun
Reply: Sorry to hear the first half, and good to hear the second!