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Sunday Puzzle: Pet theory

NPR

On-air challenge

Today's puzzle is called "Pet Theory." Every answer is a familiar two-word phrase or name in which the first word start starts PE- and the second word starts T-. (Ex. What walkways at intersections carry  -->  PEDESTRIAN TRAFFIC)

1. Chart that lists all the chemical elements

2. Place for a partridge in "The 12 Days of Christmas"

3. Male voyeur

4. What a coach gives a team during halftime in the locker room

5. Set of questions designed to reveal your traits

6. Something combatants sign to end a war

7. Someone who works with you one-on-one with physical exercises

8. Member of the Who

9. Incisors, canines, and premolars that grow in after you're a baby

10. Nadia Comaneci was the first gymnast to score this at the Olympics

11. What holds the fuel in a British car

Last week's challenge

Last week's challenge was a numerical one from Ed Pegg Jr., who runs the website mathpuzzle.com. Take the nine digits -- 1, 2, 3, 4, 5, 6, 7, 8, 9. You can group some of them and add arithmetic operations to get 2011 like this: 1 + 23 ÷ 4 x 5 x 67 - 8 + 9. If you do these operations in order from left to right, you get 2011. Well, 2011 was 15 years ago.  Can you group some of the digits and add arithmetic symbols in a different way to make 2026? The digits from 1 to 9 need to stay in that order. I know of two different solutions, but you need to find only one of them.

Challenge answer

12 × 34 × 5 - 6 - 7 + 8 - 9 [or] 1 + 2 + 345 × 6 - 7 × 8 + 9

Winner

Daniel Abramson of Albuquerque, N.M.

This week's challenge

This week's challenge comes from listener Ward Hartenstein. Think of a well-known couple whose names are often said in the order of _____ & _____. Seven letters in the names in total. Combine those two names, change an E to an S, and rearrange the result to name another famous duo who are widely known as _____ & _____.

If you know the answer to the challenge, submit it below by Thursday, January 15 at 3 p.m. ET. Listeners whose answers are selected win a chance to play the on-air puzzle.

Copyright 2026 NPR

NPR's Puzzlemaster Will Shortz has appeared on Weekend Edition Sunday since the program's start in 1987. He's also the crossword editor of The New York Times, the former editor of Games magazine, and the founder and director of the American Crossword Puzzle Tournament (since 1978).
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