The same rules as for Rainbow Killer 4
Rainbow as in "All the numbers in the rainbow"
The numbers are from 0-9
There is a zero in every nonet, row and column. Zero is chosen as it increases the killer combinations.
Each other number is missing from one and only one nonet, row and column.
Three similar puzzles with increasing difficulty, on the assassin scale I think about 0.8, 1.0 and 1.5.
Rainbow Killer 6-1
Rainbow Killer 6-4
Rainbow Killer 6-5
The four green cells are a disjoint killer cage so no repeats.
