Codebreaker scored with variations? (6)
I believe the answer is:
enigma
'with variations?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for enigma that I've seen before include "It's mysterious, difficult to understand" , "'Puzzle, riddle (6)'" , "Puzzle for gaming" , "Title of Elgar's set of variations" , "There's a mystery in game" .)