Skip to main content
Mathematics and computation

Mathematics and computation

Word wave puzzle no.6

Can you guess the word in this puzzle, which relates to a recent Physics World article?

Falling letters of English language with a hand and a question mark

Here’s how the game works:

    1. Enter a word guess – in this game the word has six letters.
    2. After submitting your guess, each letter in the guessed word is coloured to provide feedback:
      • Green: The letter is correct and is in the correct position in the target word.
      • Yellow: The letter is correct but is in the wrong position in the target word.
      • Grey: The letter is not in the target word at all.
    3. Using this colour feedback, refine your next guess.
    4. Continue guessing until you correctly identify the hidden word(s) or run out of attempts.

If you want a clue to the answer, read the article here.

Fancy some more? Check out our puzzles page.

Back to Mathematics and computation Mathematics and computation
Copyright © 2026 by IOP Publishing Ltd and individual contributors