Leidenfog
by FullDeck and Missing a Few Cards Open on SudokuPad
Strong Indigestion
- Fog of war
- Kropki dots
- Whisper lines
- Dutch whisper
The brief
**Standard Sudoku, Fog, Dutch Whispers, Kropki pairs** - Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box. - Fog: Part of the grid is covered with fog. As correct digits are placed, the fog will clear from surrounding cells. - Dutch Whispers: Adjacent digits along a Dutch Whispers line must differ by at least four. - 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.