Normal sudoku rules apply. Every 2x2 square of cells must contain a digit from each of three sets (A,B,C)-(D,E,F)-(G,H,I) however, the digits in each entropy set must be deduced by the solver. Numbers that appear in the cells with a white dot between must be consecutive, AND from the same entropy set. Numbers that appear in the cells with a black dot between must have a ratio of 2:1, AND from different entropy sets.