TESTING

Posing a challenge (7)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 16,676 — 2023-10-16 23:00:09
  24A: Laborious (7)
• Quick crossword No 15,984 — 2021-07-29 23:00:44
  14D: Posing a challenge (7)