The Sky Is Blue, Gerard
(Published on 8. January 2021, 01:00 by Lisztes)
Normal and Diagonal Sudoku rules apply. Each row, column, 3x3 box and the positive diagonal (from bottom left to top right) contains each number from 1 to 9 exactly once.
The grey lines are palindromes: they are sequences of digits which read the same backward as forward (for example: 1374731). Each half of the palindromes also act like thermometers: digits increase from the ends. (for example: 14641 is valid, but 53835 is invalid, because 5 is greater than 3).
Inequality signs between two cells show which one contains the lower/higher digit.
The puzzle is also available online.
Solution code: Row 1 and Row 6
Comments
on 4. June 2022, 20:19 by PinkNickels
Such a fun solve. Thank you for sharing!
on 8. January 2021, 19:48 by Rangsk
Fun puzzle and interesting idea for the palindromes!
