Happy Anniversary, Timotab
by FullDeck and Missing a Few Cards Open on SudokuPad
Indigestion
- Kropki dots
- Whisper lines
- Whisper 4
The brief
**Sudoku, kropki pairs, whisper-4** Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box. 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. Whisper-4: Adjacent digits along a Whisper-4 line must differ by at least four.