Here is my first puzzle that has been featured on CTC (about 9 months ago). If you haven't solved it before, give it a try here. Have fun!
RULES: Normal sudoku rules apply, and blue cells show the total of their (orthogonally) neighbouring cells.
Any feedback is highly appreciated!
Solution code: Row 5 followed by Row 6.
on 28. April 2022, 14:19 by kolot
Minor change in the text.
on 31. August 2021, 13:33 by marcmees
very nice interaction between different sum cells.
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Thanks! :)