Rules:
I am pretty pleased with the logical path you have to follow in order to solve this puzzle! I hope you'll enjoy it too! Ratings and comments are welcome of course.
Solution code: Row 2 then Row 8 (18-digit number without spaces)
on 10. June 2022, 20:54 by djorr
Very neat! And the LK variant is a perfect match with this constraint. Well done!
A: Thank you very much!
on 17. March 2022, 07:19 by Bankey
Good fun. Thanks, @ Arlo Lipof :)
A: Glad you liked it!
on 17. March 2022, 03:48 by bigger
can S be 1
so S has to appear somewhere in the sum.
A: Good point, thank you. S is a proper *sum* value (of at least two digits). It appears at least once as a box sum on each line.
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