Logic Masters Deutschland e.V.

Squishdoku rules: Place digits from 1-9 in every cell, so that no digit repeats in a row, column, or 3x3 region. The dashed lines indicate the boundaries of regions, and cells on the dashed lines are simultaneously part of the regions on both sides of the line.
Standard arrow rules: Digits on an arrow sum to the value in the attached circle. Solve online:

Sudokupad