Kropki Sudoku Help

Kropki adds white and black dots between cells on the grid.

White dot means that digits on the cells must be consecutive, and black dot means digits must be in 1:2 relation. E.g. if one cell is 3 the other must be 6 or if one cell is 4 the other must be 2 or 8.

Kropki Sudoku Solving Strategies

When grid has three cell in the same house (box, column or row) joined with two black Kropki dots those cells must be either 124 or 248. If the same house contains another pair of cells with black kropki, that other pair must be 36.

If there are three connected kropki dots, they must be 1248 or 8421.

If Kropki dots are connected but in different houses edge cells can have same values. Following grid is valid.