Logic Masters Deutschland e.V.

#01 Orion's Belt by ViKing Prime

Normal 6x6 sudoku rules apply.
Disjoint: Every star contains a different digit.
Kropki: Digits separated by a black dot are in a 1:2 ratio. Digits separated by a white dot are consecutive. Not all dots are given.

#07 Star Chart by Flinty

Latin square: Place the digits 0-5 once each in every row and column.
Disjoint: Every circle contains a different digit.
Zipper: For each line, the two digits on its ends of sum to its central digit.

#10 Minefield Maneuvers by SamuPiano

Normal 6x6 sudoku rules apply.
Disjoint: Every circle contains a different digit.
Arrows: A digit on an arrow counts the number of even digits in the indicated direction(s) combined (excluding itself). Odd digits do NOT block vision.

#16 Original Sin by Nordy

Normal 6x6 sudoku rules apply.
Disjoint: Every circle contains a different digit.
Paths: A circle with a digit N is the start of a 1-cell-wide orthogonal path containing N cells. Paths don't touch themselves or each other orthogonally. Digits don't repeat on a path.
Apples: Digits separated by an apple sum to 5.

#17 Cluster Of Galaxies by Dorlir

Normal 6x6 Sudoku rules apply.
Disjoint: Every icon contains a different digit.
Galaxies: An icon with a digit N is part of a galaxy with N cells. A galaxy is an orthogonally connected group of cell(s) that retains it shape when rotated 180°. Galaxies don't touch each other orthgonally.
Renban: Digits in a galaxy don't repeat and form a single consecutive run when sorted.

#19 Isolation by Justin Vitanza

Normal 6x6 sudoku rules apply.
Disjoint: Every circle contains a different digit.
Path: Draw an orthogonal path from the astronaut to the spaceship.
Circles: The path visits all circles. Circled digits increase along the path.
Nabner: If two digits on the path are in the same box, they differ by 2 or more.