Normal sudoku rules apply. Place the digits 1-6 once each in every row, column, and 2x3 box.
Equal-sum (blue) lines: box-bounded segments of each blue line have the same total.
Kropki: digits separated by a white dot are consecutive; digits separated by a black dot are in a 1:2 ratio (i.e. one digit is double the other). Not all dots are necessarily given.
Solve in VariantDoku (iOS, macOS, Android) or on SudokuPad.
Solution code: Enter the digits of row 1.
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