This a hybrid of Scattered Sudoku and Kropki Sudoku
RULES : Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row , column and outlined region. Grey cells are not part of any regions.
Additionally, if the absolute difference between two digits in neighbouring cells equals 1, then they are separated by a white dot. If the digit in a cell is half or double of the digit in a neighbouring cell, then they are separated by a black dot. The dot staying between 1 and 2 can have any of these dots. All possible dots are marked.
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