Lighthouse 639
by BremSter, FullDeck & Virtual Open on SudokuPad
Indigestion
- Fog of war
- Arrows
- Whisper lines
- German whisper
The brief
- Normal Sudoku rules apply. - The grid is covered with fog. There is an initial light source that clears the fog. Placing correct digits into cells clears the fog from all adjacent cells. - Digits placed on an arrow must sum to the digit placed in that arrow's circle. - On green German Whisper Lines adjacent digits must have a difference of at least 5. - Arrows and German Whisper clues may overlap; however, arrow clues will never overlap with other arrow clues, and German whisper clues will never overlap with other German whisper clues.