Logic Masters Deutschland e.V.

Normal Sudoku rules apply.
Numbers outside the grid show the totals of the digits along the indicated diagonal.
If digits are separated by white dots, they are consecutive.
Every three-cell-segment connected by teal lines contains one digit from each of the groups {147}, {258}, and {369}.
(If only 2 cells are connected, the digits must be from different groups.)
The dots and dashes are Morse Code spelling:
"That's three in the corner"

Try That's Three in the Corner here:
SudokuPad

This is part of my Simon Says collection.
Oh Bobbins
Haven't got a Scooby-Doo
One to One Ratio
Good Grief
"Two Knotty Four Words"
Come on, Brain
"Thingy Thingy"
"That's Three in the Corner"