Rules

To solve a Doble, you need to fill all the white squares with the numbers 1 to 9. Like so

4 7 6 8 1
9 2 7
1 8 5 3 9
3 4 2
6 9 7 1 8

In Addition;

  1. Each number can only appear once in a row/column.
  2. The ring around a black square cannot contain a number more than once.
1 2 3
8 4
7 6 5

Clues

The dots ( ) by the side of grid represent the numbers for the corresponding row or column

1 =
2 =
3 =
4 =
5 =
6 =
7 =
8 =
9 =

To the right is a key to show what combination of dots represent which number.
when you see the dots together like this ( ) they can represent several different
combinations of numbers such as (1,3,2) or (7,2) or (3,6).

So try and decipher the clues and fill in the grid.

Good Luck!