Normal Sudoku rules apply. Clues outside the grid indicate the sum of the first X digits in that direction, where X is the first digit.
This puzzle is a variation on a theme established in an X-Sums puzzle by Sam Cappleman-Lynes, hence the title :) Happy solving!
Solution code: Row 5 (left to right)
on 11. September 2021, 01:44 by uvo_mod
Labels ergänzt.
on 20. May 2021, 15:25 by cdwg2000
Very nice!