Phisto Fortress II
by Blobz Open on SudokuPad
- Fog of war
- Whisper lines
The brief
Normal sudoku rules apply.
Digits in fortress cells are SMALLER than all digits in orthogonally adjacent non-fortress cells.
Along a green line, adjacent digits differ by at least 5.
The grid is partially covered by fog. Placing a correct digit will clear surrounding fog, possibly revealing more clues.