Logic Masters Deutschland e.V.

Standard Sudoku rules apply.
Place the digits 1-9 in each row, column, and 3x3 box.

Kropki dots
Digits separated by a white dot are consecutive. Digits separated by a black dot have a 2:1 ratio (i.e. one digit is double the other).

258 Row Indexing
A digit in the cage on row 2 indexes the position of the digit 2 in its column. A digit in the cage on row 5 indexes the position of the digit 5 in its column. A digit in the cage on row 8 indexes the position of the digit 8 in its column.

Play the puzzle here: SudokuPad