Logic Masters Deutschland e.V.

Place nine distinct letters into the grid such that each letter appears once in each row, column, and 3x3 box and the unshaded cells satisfy the given crossword clues.

Where multiple clues appear in a row or column with no shaded cell between then, answers may overlap.

Penpa+: https://tinyurl.com/5dfsry6e
Note: Use Caps lock to enter letters in Sudoku mode.

Across:
1. (with 5 down) A job for Wolfram?
7. A deadly Bean
8. Archipel de la Société (e.g.)
9. Cpl's superior
10. Boyega's Rose
13. Tell tales
15. see 3 down
16. Original dungeon masters
17. It's placed before the hand
19. Wilco strummer
20. Just a bit of work
21. It's rigged

Down:
1. Meal precursor
2. DNA polymer finisher
3. (with 15 across) Overhead for a geodesic
4. Streamer's bane
5. see 1 across
6. Foiled if not canny?
11. Bond in two ways
12. Monumental slab
14. Alternative to outs
18. Unwarranted audience?