Al cuadrado
- 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. Digits in a cage must sum to a square number. No two cages may sum to the same square number. (Digits in a cage may repeat.) Digits joined by a black dot are in a 1:2 ratio. Digits joined by a white dot are consecutive. (Not all dots are given.)