Tenkropki
- Kropki dots
The brief
- Normal Sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.
- Kropki: Digits joined by a black dot are in a 1:2 ratio. Digits joined by a white dot are consecutive. (Not all dots are shown.)
- Tentropy Lines: Every set of 4 adjacent digits on a peach line must contain a digit from each of the X-pair (ten-pair) subsets of {1,9}, {2,8}, {3,7}, and {4,6}. A 5 may not appear on a tentropy line. Digits on a line may repeat if allowed by other rules.