13 across
Cheat
producing
score
in
old
notation
(6-5)
Cheat producing score in old notation (6-5)
-
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
Cheat is the definition, meaning to betray or deceive someone. The rest of the clue serves as a cryptic hint: a "score" is 20, which in Roman numerals ("old notation") is XX — literally a DOUBLE CROSS.