Theme: Secrets & Codes

Enter a world of hidden messages, misdirection, puzzles, and secure information.

9 themed words All 26 letters covered Vowels shown in gold Consonants hidden in blue
1
  U I  
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of knowledge challenge.
  3. A short test or set of questions challenges what someone knows.
  4. The answer starts with Q and has 4 letters.
Reveal answer
Q U I Z
Background information
Quizzes are common in classrooms, games, and competitions.
2
  E   O  
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of misdirection.
  3. A misleading object or signal diverts attention from the real target.
  4. The answer starts with D and has 5 letters.
Reveal answer
D E C O Y
Background information
Decoys have been used in hunting, military tactics, and security operations.
3
  A U    
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of secure storage.
  3. A reinforced room or compartment protects confidential items or valuables.
  4. The answer starts with V and has 5 letters.
Reveal answer
V A U L T
Background information
Vaults use physical security to protect assets, documents, and other sensitive materials.
4
E   I     A
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of historic encryption.
  3. A famous rotor-based German machine encrypted military communications.
  4. The answer starts with E and has 6 letters.
Reveal answer
E N I G M A
Background information
Enigma machines were used by Nazi Germany; Allied cryptanalysis helped read some encrypted traffic.
5
  U       E
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of problem solving.
  3. A challenge requires logic or insight to work out a solution.
  4. The answer starts with P and has 6 letters.
Reveal answer
P U Z Z L E
Background information
Codebreaking and puzzle-solving both involve finding patterns and testing hypotheses.
6
  I     A  
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of piece assembly.
  3. Interlocking pieces must be fitted together to reveal an image.
  4. The answer starts with J and has 6 letters.
Reveal answer
J I G S A W
Background information
Jigsaw puzzles take their name from a type of saw historically associated with cutting puzzle pieces.
7
  E     O    
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of cryptographic key.
  3. A chosen word can help control how a message is enciphered.
  4. The answer starts with K and has 7 letters.
Reveal answer
K E Y W O R D
Background information
Keyword-based ciphers use a word to derive an alphabet or other encryption rule.
8
    A       O  
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of hidden mechanism.
  3. You can observe a system’s inputs and outputs without seeing its workings.
  4. The answer starts with B and has 8 letters.
Reveal answer
B L A C K B O X
Background information
A black box describes a system analyzed through its behavior rather than its internal structure.
9
    A         I   E
Show expanded hints
  1. A word connected to secrets & codes.
  2. Think of portable data storage.
  3. A small USB device can carry files, including encrypted documents.
  4. The answer starts with F and has 10 letters.
Reveal answer
F L A S H D R I V E
Background information
USB flash drives store data in nonvolatile flash memory and are easily portable.

Secrets & Codes: Did You Know?

Rotor encryption
Enigma machines used rotating components to transform letters.
Words as keys
Some classical ciphers use a keyword to construct a substitution alphabet.
What is a black box?
A black-box system can be studied through its inputs and outputs.
Portable secrecy
Sensitive files on flash drives can be protected with encryption.