Selective Attention
by FullDeck and Missing a Few Cards Open on SudokuPad
Indigestion
- Kropki dots
- Region sum lines
- Modular lines
- Kropki ratio
The brief
Normal sudoku rules apply. All lines are both modular and region sum lines. Different colors are solely to distinguish lines that intersect. Digits separated by a black dot are in a 1:2 ratio. Not all black dots are necessarily given.