Cells separated by a white dot are consecutive numbers (ie 3,4 or 4,3)
Cells separated by a black dot have a 1:2 or 2:1 ratio relationship (ie 4,8 or 8,4)
Numbers 1 and 2 are separated by a black dot, not white.
Diagonally adjacent cells with consecutive numbers and/or a 1:2/2:1 ratio are NOT marked.
Cells without a dot between them neither have a ratio of 1:2/2:1 or are consecutive. ALL indications are given. Standard sudoku rules apply; every row, column and 3x3 square should have the numbers 1-9 only once.
Grid: Enter single characters into cells, like a crossword
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