WORLD’S SMALLEST, HARDEST CROSSWORD

ACROSS

1. Family line (4) 5. Brown seaweed (4) 6. (L) in itself (2.2) 7. Keel extension (4)

DOWN

1. Glides on snow (4) 2. High-pitched bell-like noise (4) 3. Alternatively (4) 4. Video file format (abbr) (4)