Logic Masters Deutschland e.V.

Mistake in the link, a modulo set has a digit from [147], [258], and [369]. Sorry for the typo!

Place the digits 1-9 in every row, column, and box without repeats.

The grid is covered in fog, except for a couple starting cells. Placing correct digits removes the fog from all adjacent cells.

Lines moving through the centers of cells exist in the grid, each with a different color. Lines do not share cells or branch. All lines follow two or more of the three following rules:

- Box borders divide the line into sections with the same sum

- Any three sequential cells along the line make a modulo set (one number from [147], [258], and [369])

- Adjacent digits along the line differ by at least 5

Note that the lines are big enough that they appear in all cells around a corner when moving diagonally between cells unless covered by another line (i.e. no line goes from r2c2 to r3c1 but a line could go from r3c1 to r4c2)

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