Logic Masters Deutschland e.V.

Normal Sudoku Rules Apply.

Kropki Dots:
Digits separated by a black dot are in a 2:1 ratio.
Not all dots are given.

Zipper Lines:
Pairs of digits an equal distance from the centre of a Zipper Line sum to the same total. For odd-length lines, the total is the digit placed in the line's central digit.

A valid fill for an even length, six cell, line would be [346:578] where 3+8, 4+7 and 6+5 all sum to 11. The total for each line may be different. Digits may repeat on a Zipper Line.

For convenience, centres of:
- Odd-length lines are highlighted with a bump/dot.
- Even-length lines are highlighted with a diamond.

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