WORLD’S SMALLEST, HARDEST CROSSWORD
ACROSS
1. 21st letter of the Greek alphabet (3) 4. High-pitched bell-like sound (4) 6. Semi-domesticated fish (4) 7. Eternity (3)
DOWN
1. Go to the next page (abbr) (3) 2. Engage for wages (4) 3. Knowledge (4) 5. Frankfort its capital (abbr) (3)