Logic Masters Deutschland e.V.

You have 9 pairs of kropkis, 9 disjoint groups, 9 rows, 9 columns and 9 boxes to put 9 digits 9 times each into a 9 by 9 grid. There were 9 9s in that sentence. Go.

Sudoku

Each row, column, and region must contain the digits 1-9 once each.

Disjoint Groups

Cells in the same position within the boxes cannot contain the same digit.

Ratio Kropki Dots

Where cells are separated by a black Ratio Kropki dot, one is double the other.

Difference Kropki Dots

Cells separated by a white Difference Kropki dot are consecutive (have a difference of one).

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