The most common and most likely answer to this crossword clue is the 6 plus 4 letter word RUBIKS CUBE
I've seen this crossword clue in The Times
R
U
B
I
K
S
C
U
B
E
More clues leading to the result RUBIKS CUBE
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.