Related Clues:
- One offering cryptic clues to sift
- Puzzling person/thing
- Person still being portrayed as problem
- Tough query
- It's difficult to figure out what this is?
- Hard problem
- Sift puzzling piece of verse
- Enigma of Cook not opening
- It's a mystery why one might read Hemingway
- Mind-boggling puzzle
- Encryption machine featured in 'The Imitation Game'
- Show off funny prose
- Unoriginal person
- German cipher machine cracked by Alan Turing
- Source of wealth bearing good returns, a mystery