Sudoku Variants Series (237) - Before 1 - After 9 Sudoku
(Published on 14. August 2018, 00:00 by Richard)
Before 1 - After 9 Sudoku
Inspiriation for this type comes from Sudoku GP 2014 Round 2, Serbia.
Solve online in Penpa+ (thanks glum_hippo!)
Apply classic sudoku rules. Numbers outside the grid indicate the sum of all digits placed before the 1 (top/left clue) or after the 9 (bottom/right clue) in the respective row or column.
Solution code: Row 2, followed by column 3.
Comments
on 9. February 2025, 14:46 by sisk0
Sudokupad link:
https://sudokupad.app/bmmkkzs2cm
on 4. November 2021, 05:44 by Richard
Added link for online solving. Thx glum_hippo!
on 4. May 2021, 17:15 by glum_hippo
Fascinating variant! Here it is in penpa with automated answer check - Richard, please delete if you don't want an interactive version: https://git.io/J3awg
on 14. August 2018, 19:54 by Matt
thanks, didn't see this all the time :-(
on 14. August 2018, 19:10 by Statistica
@Matt: You have two 8 in the first column.
on 14. August 2018, 14:08 by zorant
No puzzle have not two solutions.
And I make the same mystake. deleted all and try again with a little change
