Skyscraper Penpalindromes
(Published on 24. November 2025, 00:37 by cygne)
Skyscraper Penpalindromes by Cygne
Rules
- Normal Sudoku rules apply.
- Digits along a gray palindrome line read the same forwards and backwards.
- Digits in the grid represent the heights of skyscrapers on their cell. Digits outside the grid indicate the number of skyscrapers that can be seen in their line of sight, given that taller skyscrapers obscure all shorter skyscrapers behind them.
Play in SudokuPad
The sixth puzzle in my Penpalindromes series. Hope you enjoy! If you do, please give the prior ones a try:
Solution code: Row 1 digits, left to right
Comments
on 24. January 2026, 23:31 by VitP
almost gas ... ALMOST.
the colouring is easy ... eg. start with row 4.
after that, the digits solve in seconds.
on 28. November 2025, 17:53 by nbdurie
I really liked it, but on the final solve I believe the 3 clue outside the box should be a 2??
on 25. November 2025, 19:17 by Franjo
Thank you very much for creating and sharing this nice coloring exercise.
on 25. November 2025, 11:50 by galium_odoratum
These are really fun, thank you for setting! One small QoL improvement: consider marking the middle point of each palindrome somehow (like a zipper line).
on 24. November 2025, 12:58 by marcmees
great coloring (lettering) puzzle. Thanks for sharing.
on 24. November 2025, 02:23 by Fisherman
Hello world. This is a very good puzzle.
