WORLD’S SMALLEST, HARDEST CROSSWORD

ACROSS

1. An avens (4) 4. Expression of objection (2) 5. (Chem symbol) bohrium (2) 6. A dry sherry (4)

DOWN

1. Nonsense (sl) (4) 2. Sound of surprise (2) 3. Boundary between the Earth’s crust and the mantle (4) 5. Very great number (inf) (2)