Klein Bottle Sudoku
(Published on 14. August 2020, 03:37 by cam)
This is the second in a series of puzzles that are played on a Klein Bottle. If you like this idea, please let me know.
Ordinary sudoku rules DO NOT apply. Please read carefully. This puzzle takes place on a klein bottle. The top and bottom of the grid are glued together--they obey periodic boundary conditions (see the example on the left). The left and right side are twisted and then glued together (see the right side). The little klein bottles denote the separation of two horizontal 9 square "klein rows." Each column and box behave normally. Every column, box, and klein row must contain the digits 1-9 exactly once. You may notice that the 1's in the puzzle are in the same "ordinary row" but they are separated by a klein bottle and are therefore in different klein rows. Let me know if anything is unclear in the comments :)
Here is the puzzle. Enjoy! :)
Solution code: Column 2 followed by column 7
Comments
on 22. April 2021, 21:47 by BMEP
the puzzle kinda set on f-puzzles: https://f-puzzles.com/?id=yz5acgxf
on 15. August 2020, 08:56 by Nothere
Once understood the rules, its not so hard to solve. The puzzle gives a nice experience how to travel "on" a surface like the Klein bottle. Thanks.
on 14. August 2020, 22:49 by cam
Clarified that each column and box behave normally
