Normal sudoku rules apply. Digits in a cage must sum to the little number in the upper left, and may not repeat in the cage. Numbers outside the grid indicate the sum of the digits on their indicated diagonal. Digits on these diagonals may repeat when otherwise allowed. I think this puzzle is 2 stars out of 5 for difficulty for many solvers. As always, comments welcome. Thanks!
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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 11. February 2024, 04:37 by cascadeshiker
Very nice. A consistent level of difficulty throughout. Thanks for a most satisfying solve.
on 1. January 2024, 19:58 by PinkNickels
very enjoyable. every time it seemed as though a roadblock was going to emerge, a new pathway opened up. great example of a puzzle with excellent setting despite the puzzle not being super difficult. well done
** Thanks! I just re-solved the puzzle last night, and your description of the flow is perfect. :-)