Logic Masters Deutschland e.V.

Squishdoku: Normal Squishdoku rules apply; place the digits 1-9 at most once in every row, column, and 3x3 box. There are nine 3x3 boxes, which overlap at the dashed lines.

Dutch Flat Mates: Every 5 in the grid must have a 1 directly above it or a 9 directly below it. It may have both, but it doesn’t need both.

Periodic Sums: A clue outside the grid indicates the sum of the first cell seen in its row or column and every Nth cell after, where N is the digit in the first cell.

White Kropki: Cells separated by a white dot have values with a difference of one.

Expected Difficulty: 2-4 stars

Happy New Year!

---