Palindromic Snake
(Published on 18. March 2020, 00:38 by Phistomefel)
The usual Sudoku rules apply. The two gray fields represent the two ends of a snake, i.e. a path that is one cell wide and does not touch itself orthogonally or diagonally. The sudoku grid without the cells of the snake must be a single connected area.
The clues at the edge indicate how many 90 degree bends the snake has in the corresponding row or column. Here "0" means that the snake in the respective row or column contains no 90 degree bend, and "+" means that it makes at least one 90 degree bend in the row or column.
The numbers on this snake form a palindrome. The comparison symbols between two cells indicate which of the two cells contains the larger digit.
The puzzle is also available online via Penpa Plus. Have fun solving!
Solution code: 4th and 8th row
Comments
on 9. September 2023, 12:03 by CrazyCrypticC
Very nice logic. Thank you.
on 21. August 2021, 18:55 by Phistomefel
Added tag "Online solving tool".
on 12. May 2021, 18:04 by Vebby
@Bankey: It must be a single orthogonally connected area i.e. you should be able to connect any two cells in the area by moving only orthogonally.
on 29. December 2020, 15:25 by Bankey
For the non-snake part, the connection must be only orthogonal, or can also be diagonal ?
@vebby, thanks for your reply. Just saw it. Grateful if someone can post the CtC app for the puzzle as I find that easier to use. Thanks, again.
on 20. December 2020, 13:32 by Phistomefel
Added Penpa link.
on 21. March 2020, 16:13 by Mody
Total schön zu lösen, (und für mich ungewöhnlich) nicht trotz Schlange sondern wegen Schlange ;)
on 21. March 2020, 02:56 by Phistomefel
Hervorheben einer ungewöhnlichen Regel
on 18. March 2020, 20:27 by Dandelo
Sehr schönes Rätsel. Irgendwo geht es immer einen Schritt weiter. Und selbst wenn die Schlange platziert ist, noch knifflig.
on 18. March 2020, 18:14 by Puzzle_Maestro
Stunning puzzle with some really beautiful logic. Thank you!
on 18. March 2020, 15:15 by Statistica
Klasse!
