Normal sudoku rules apply. Digits in cages cannot repeat and sum to the total shown. Consecutive digits cannot border each other in the same cage. There is 1 negator in every row, column and box, forming a set of the digits 1-9. If negators appear in a cage they subtract their value from the sum of the other digits. Each diamond is a friendly square. Friendly cells are cells which match either their row number or their column number. Digits may never repeat in friendly cells, but not all digits need appear as a friendly cell. The circular white dot joins consecutive digits.