Negator XS
(Published on 13. September 2023, 00:55 by thoughtbyte)
This is the follow-up to Doubler XL . Happy solving!
Normal Sudoku rules apply. Additionally:
Negators: nine cells (one in each row/column/box) are negators, and have values equal to the negative of their digits. Each digit appears in exactly one negator.
X-sums: a clue outside the grid is the sum of the first X cells in the corresponding row/column, where X is the value in the cell nearest to the clue. If the value of X is negative, count the first X cells going in the opposite direction. For example, if R2C1 is a negative X-sum digit -4, the X-sum is the total of R2C1, R2C9, R2C8, and R2C7. Question mark clues are any single digit integers (-9 to 9).
Evens/odds: the cell with the grey square contains an even digit; the cell with the grey circle contains an odd digit.
Diagonal: digits cannot repeat along the indicated diagonal regardless of their sign.
F-Puzzles: https://f-puzzles.com/?id=yvbbxk8a
CTC: https://tinyurl.com/negatorxs
Solution code: Row 3.
Comments
on 7. August 2024, 15:04 by madhupt
Beautiful puzzle!
on 30. September 2023, 23:05 by Godrick
Very nice puzzle. Brilliant idea! The break-in was mind boggling (in a nice way). Thanks :-)
on 17. September 2023, 12:44 by apiyo
Incredible stuff thoughtbyte! You're a master of minimal puzzles. Hard to believe that resolves from such a sparse beginning. Thanks for sharing this!
on 15. September 2023, 11:32 by erml
A pure joy to solve! Masterpiece!
on 14. September 2023, 15:56 by samuel1997
It is so enjoyable! I really love the idea that you can put some -1 and ? X-sum clues, a diagonal, 1 odd and 1 even, and negator could lead to a unique solution! And the solve path is brilliant till the end! Love it!
on 14. September 2023, 05:24 by yttrio
An excellent follow-up to Doubler XL! It was really interesting to work out how the X-sums worked with negators.
on 13. September 2023, 10:05 by Snookerfan
Very nice and fun! Thank you
