Six balls, one white and nobody else at the table: clearance #317 is about finishing the job in as few visits to the white as you can manage, fouls counted as extra shots.
No ball lies within 35 cm of a pocket. Expect long pots from the start and give yourself room for error by playing the safest one first.
No two balls are touching, so every ball can be played on its own.
Even the Expert computer did not clear this layout within the 20-shot limit — it left 1 ball on the table. Any clearance here is a strong result.
Treat the awkward balls first. Moving a rail ball or splitting a pair while you still have easy balls left is cheaper than facing it last with nothing to fall back on.