H E L L O
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Dr. Shapiro's Puzzle of the Day

Today's Puzzle

Friday, May 28
My neighbor made this sculpture and displayed it in front of their house!

I've blurred out a word in the title, "2880 _______". What is the missing word?

Hint When I saw this sculpture for the first time, I stopped and counted how many elbow pipes were used in its construction, and I was quite pleased to confirm that the title was accurate.

   


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Yesterday's Puzzle + Solution

1.       2.       3.       4.       5.       6.       7.      

Can you identify seven eight U. S. states from close-ups of their state quarters and license plates? (Each of #1–6 has a single answer, but the quarter and license plate in #7 are from different states, despite depicting the same object.)

Solution
  1. Florida (clues: Cape Canaveral, oranges, palm trees, a Spanish-looking ship, and part of the state's outline)
  2. Wisconsin ("America's Dairyland")
  3. Hawaii (King Kamehameha, a rainbow license plate, and 1959—the date Hawaii became a state)
  4. New Hampshire (Old Man of the Mountain, "Live Free or Die")
  5. Virginia (quadricentennial of Jamestown, "Virginia is for Lovers")
  6. Vermont (maple sugaring, a very green license plate; Vermont is home to the Green Mountains and also means "green mountain")
  7. Ohio, North Carolina (birthplace of the Wright Brothers and location of their first flight, respectively)

Congratulations to yesterday's partial solvers Natalie, Inca, Charlie, Jacob C., and Connor, and complete solvers Graham, Kate, and the Greggs. Thanks to everybody who made a guess!

About This Site

Though he now teaches mathematics, Dr. (né Mr.) Shapiro's first job in a K–12 school was as a lunch monitor in Davis, CA. It was there that he originated the Puzzle of the Day, even rewarding correct answers with tickets in denominations like "15 points" (though without a clear idea of how he'd ultimately redeem these). Dr. Shapiro's favorite puzzle from this pre-professional era was "Tell me the location of the beehive on this campus."

Ten years later, Dr. Shapiro revived Puzzle of the Day at Proof School, writing each day's puzzle on a name tag. After 600 puzzles or so, he was just starting to feel normal about students reading his chest all the time when campus closed and the puzzle, like the rest of our lives, moved online. New puzzles are posted daily on school days.

Want to catch up on old PotDs? There's an archive currently containing puzzles from March 2020 to March 2021.