Normal sudoku rules apply. The numbers on the outside of the grid refer to the adjacent row or column, and indicate that the digits residing between the 1 and 9 must sum to that number (do not include the 1 or 9 in the sum). Digits along an arrow must sum to the digit in the large circle at its end. I think this puzzle is 2 stars out of 5 for difficulty for many solvers. As always, comments welcome!
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Solution code: First row of puzzle, and fourth column of puzzle (read top to bottom). Enter as a string of 18 digits, no spaces.
on 22. August 2022, 07:35 by brandon_bot
Great interactions between the two rulesets.
** Thanks for the feedback and solve! :-)
on 21. August 2022, 15:27 by Snookerfan
Lovely puzzle, thank you!
** Thanks for the solve!