I have ten three letter words/abbreviations in a sequence, numbered 0-9, each of which differ by precisely one letter from their previous and next words. Here are clues for each of the words:

  1. The Fantastic 4 break this
  2. Superior to 5 for information transfer... in closed areas
  3. What the Fantastic 4 is definitely not
  4. Incredibly cold... and quite dangerous
  5. Eats 3... in a former state
  6. See 1.
  7. Pair with 9 to comply with a treaty
  8. Impossible
  9. Visit this often if you like schadenfreude
  10. See 6

What are the ten words?

Here's a hint:

"Fantastic 4" should really be "Fantastic Mr. 4"

More hints: an additional set of clues

0. see 6
1. Add a ringing noise, and this happens at 2 all the time
2. Third busiest in the world... but perhaps not under current conditions
3. The closest we have to 7 uses this
4. "Can't let you do that"
5. One letter away from 2
6. 1791: A landmark U.S. 0 concerns this
7. see 3
8. One letter from 6
9. "There are many like it, but this one is mine"

  • 1
    $\begingroup$ Good puzzle +1, but are these really cryptic clues? Or are they simply crossword-type clues? $\endgroup$ Commented Aug 22, 2020 at 9:59
  • 1
    $\begingroup$ just for clarification, by "differ by precisely one letter" you mean that "ICE" would match "ACE", but not "INC", because the position of the other letters must be preserved, right? $\endgroup$ Commented Aug 22, 2020 at 14:59
  • $\begingroup$ @Lukas Rotter Yes, that's correct $\endgroup$ Commented Aug 22, 2020 at 18:22

1 Answer 1


I believe the answers are:

0 LAW (the Fantastic Four break it)
1 LAN (better than FAX(5) for short-range data transfer; LAN/DING happens at LAX(2))
2 LAX (the Fantastic Four are not; it is a busy airport)
3 LOX (used for rocket propulsion; cf. FTL(7))
4 FOX (eats salmon, the precursor of LOX(3), if it can get it, though I didn't think that was particularly a thing foxes were noted for; "Fantastic Mr. Fox"; "Can't let you do that" seems to be a reference to a game called Star Fox)
5 FAX (not so good as a LAN(1) for data transfer; one letter away from LAX(2))
6 FAL (a kind of rifle, I ?think?; the US law is the Bill of Rights, more specifically the Second Amendment, though it doesn't concern this kind of rifle in particular)
7 FTL (faster-than-light travel is impossible)
8 FML (website providing much schadenfreude; one letter from FAL(6))
9 FMJ (FMJ bullets, unlike some other sorts, comply with the Hague Convention; the Rifleman's Creed occurs in the movie Full Metal Jacket)


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