This variation allowed surprisingly interesting deductions. It might be a bit harder than the average puzzle on this series, but hopefully still approachable. Have fun!
Normal Sudoku rules apply.
Even parity sandwich sums: Blue digits outside the grid indicate the sum of the digits sandwiched between the rightmost and leftmost
even digit of the row/topmost and bottommost
even digit of the column.
Odd parity sandwich sums: Orange digits outside the grid indicate the sum of the digits sandwiched between the rightmost and leftmost
odd digit of the row/topmost and bottommost
odd digit of the column.
Ambigous sandwich sums: Black digits outside need to be determined by the solver whether they are even or odd parity sandwich sums.
Play on SudokuPad
Try out the others of this series:
Parity Fun 1
Parity Fun 2
Parity Fun 3
Parity Fun 4
Parity Fun 5
Parity Fun 6
Parity Fun 7
Solution code: Row 7
Last changed on on 11. January 2026, 13:20
Solved by SirShyLordy, marcmees, sedici, SKORP17
Comments
on 11. January 2026, 14:24 by marcmees
Nice idea. Thanks
on 11. January 2026, 13:21 by galium_odoratum
Corrected SudokuPad link & solution code
Last changed on 11. January 2026, 13:23on 11. January 2026, 11:09 by SirShyLordy
The SudokuPad link has the wrong sandwich sum on column 7, and the post here has the wrong one on row 7.
-Sorry I got the versions confused, thank you for pointing this out :) ~galium