Holes
by FullDeck and Missing a Few Cards Open on SudokuPad
Indigestion
- Kropki dots
- Modular lines
The brief
- Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box. - Modular lines: Any set of three adjacent digits along a modular line has three different remainders when divided by 3. - Kropki pairs: Digits in cells separated by a black dot are in a 2:1 ratio. Digits in cells separated by a white dot are consecutive. Not all dots are necessarily given.