### Clue: Variation resolved in game (6)
### Answer: ENIGMA 
 ### Explanation: Definition: Variation
  **Anagram of**(resolved) IN GAME.
Answer:  ~~I presume that an enigma, something that is not understandable must be a variation from the normal scheme of things.~~ Edit.note (thanks ):  Reference to one of Elgar's Enigma Variations.