On-air challenge: Every answer is a familiar two-word phrase or name with the initials M.N. For example: Be pleasant in order to appease someone? Answer: Make Nice.
Last week's challenge: Name a famous person in history — four letters in the first name and six letters in the last. Move the first letter of all this to the end. The result will be a two-word phrase that might be defined as "beeline." Who's the famous person, and what's the phrase?
Answer: Marc Antony, arc antonym
Winner: Emily Jackson of Hamilton, Ala.
Next week's challenge from listener Dave Hanson of Mounds View, Minn.: Name a well-known person from the 20th century who held an important position. Take the first and last letters of this person's last name, change each of them to the next letter of the alphabet, and you'll get the last name of another famous person who held the same position sometime after the first one. Who is it?
If you know the answer to next week's challenge, submit it here. Listeners who submit correct answers win a chance to play the on-air puzzle. Important: Include a phone number where we can reach you Thursday at 3 p.m. Eastern.