- Normal Sudoku rules apply.
- Blue digits on the left side of the grid indicate the sum of the first X seen digits, where X is the first digit seen. (X-Sums)
- Red digits on the right side of the grid indicate the number of seen 'buildings', where heights of buildings are indicated by the digits in the grid. (Skyscraper)
- Outside corner clues apply these rules diagonally, along which digits may repeat, and buildings of identical height cannot be seen behind the first instance of that digit.
If you'd like to try a much easier version first to get used to the constraints, here is a 6x6 Mini Xyscraper for your delectation. 😉
Thanks to GarlicBredFries for the constraint combination suggestion! 😄 Any feedback and comments welcome!
Solution code: Row 5 (left to right) & Column 5 (top to bottom) (18 digits)
on 6. December 2021, 13:31 by Eloi.blok
Very nice puzzle. Tks!
on 6. December 2021, 05:58 by henrypijames
Looked a bit daunting at first, but turned out to be okay - 3¼ stars difficulty.
on 5. December 2021, 23:32 by GarlicBredFries
Thanks for the puzzles! I like the way outside clues can disambiguate the centers of grids