Double Decker Sandwiches
by FullDeck and Missing a Few Cards Open on SudokuPad
Heartburn
- Kropki dots
- Sandwiches
- Kropki ratio
- Sandwich
The brief
- Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box. - Sandwiches: Clues outside the grid give the sum of the digits appearing between 1 and 9 in that row or column. - Ratio pairs: Digits separated by a black dot are in a 1:2 ratio. Not all dots are necessarily given.