Will Shortz

On-air challenge: Every answer is a familiar two-word phrase or name in which the first word starts SI and the second word starts with T. For example, given "unadorned set of facts," you would say, "simple truth."

Last week's challenge: Name a movie in two words — five letters in each word. Both words start with vowels. Take one letter in the first word, move it two spaces later in the alphabet, and rearrange the result. You'll get the second word in the movie's title. What movie is it?

Answer: After Earth

On-air challenge: Categories are given based on the name "Homer," the name of a town in Alaska. Name something in the category beginning with each of the letters H-O-M-E-R. For example, if the category were "Chemical Elements," you might say Helium, Oxygen, Magnesium, Einsteinium, and Radon. You can give the answers in any order.

On-air challenge: Every answer is a made-up two-word phrase in which the letter I is inserted somewhere inside the first word to get the second word.

Last week's challenge: Think of a word starting with G. Change the G to a T and rearrange the letters after the T. The result will be a new word with the same meaning as the original word.

Answer: Giant; titan

Winner: Bonnie Kind of Germantown, Md.

On-air challenge: Today's theme is "C.S.I." — as in the name of the long-running TV show. You're given three words starting with the letters C, S and I. For each set, give a fourth word that can follow each of the original words to complete a compound word or a familiar two-word phrase.

On-air challenge: Every answer is a familiar two-word phrase or name in which the first word starts with H-A and the second word starts with T.

Last week's challenge: From listener Al Gori of Cozy Lake, N.J. Name a famous American man — first and last names. Change the first letter of his first name from T to H. The result will sound like a term for an attractive person. Who is it?

Answer: Ted Turner; head turner

Winner: Vernon Cole, Brownsboro, Ala.

On-air challenge: You are given two words starting with M-A. The answer is a third word that can follow the first one and precede the second one, in each case to complete a compound word or a familiar two-word phrase.

Last week's challenge: Name a famous performer whose last name has six letters. Move the first three letters to the end — without otherwise changing the order of the letters — and add one more letter at the end. The result, in seven letters, will name a place where this person famously performed. Who is it, and what's the place?

On-air challenge: Every answer today consists of two people, either real or fictional, whose last names are anagrams of each other.

On-air challenge: For each given category, name something in the category where the first letter is also the first letter of the category. For example, given "Military Ranks," you would say "Major."

Last week's challenge: Name a geographical location in two words — nine letters altogether — that, when spoken aloud, sounds roughly like four letters of the alphabet. What is it?

Answer: Aegean Sea; Indian Cay

Winner: Terry Thacker, Greenville, S.C.

On-air challenge: Every answer is a familiar two-word phrase or name with the initials "J.R."

Last week's challenge from listener Sandy Weisz: Take a common English word. Write it in capital letters. Move the first letter to the end and rotate it 90 degrees. You'll get a new word that is pronounced exactly the same as the first word. What words are these?

Answer: Won, one; wry, rye

Winner: Ben Austin of Dobbs Ferry, N.Y.

On-air challenge: Every answer is a two-word phrase in which the first word starts with O. Drop the O, and you'll get a new word that ends the phrase.

Last week's challenge: Name something in nine letters that is commonly read on Sunday morning. If you have the right thing, you can rearrange all the letters to name a bygone car model that you still see on the road today. What are they?

Answer: Scripture; PT Cruiser

Winner: Pam Smith of Beaverton, Ore.