Normal Sudoku Rules Apply.
Each given outside clue is either a Sum, Product, or Difference of the digits in the cells involved with that specific clue's ruleset.
Difference clues always refer to the difference of 2 cells.
Left Side clues are sandwiches (the cells between the 1 and 9 in their row).
Right Side Clues are anti-sandwich (the cells outside the 1 and 9 in their row).
Top and Bottom Clues are Little Killer clues (the cells along only one of the two adjacent diagonals starting from that clue).
Solution code: Solution Code Row 6 followed by Column 7 Left to Right, Top to Bottom, No Spaces.
on 2. April 2024, 06:04 by wisty
Very cool ruleset! Clean execution. Memorable puzzle :)
on 1. February 2024, 21:26 by damasosos92
Beautiful puzzle! Added to my favourites!
on 11. March 2022, 12:45 by riffclown
linked co authors
on 13. January 2022, 13:13 by Pallando
In the Penpa version we have added some extra cells in a ring beyond the outside clues, so that people who like taking notes may edit them to help keep track of their deductions about the type of outside clue each extra cell is next to.
on 13. January 2022, 01:13 by riffclown
Corrected HTML for Ampersand