Dots and Crosses
- Kropki dots
- Renban lines
The brief
Standard sudoku rules apply: each row, column, and 3x3 box must contain all the digits from 1 to 9.
Renban: each magenta cross must contain a non-repeating set of consecutive digits.
Kropki pairs: digits separated by a white dot must be consecutive; digits separated by a black dot must be in a 2:1 ratio.