Be like shooting fish in a barrel
Definition 1 of 1
Pro Tip 1/3Colloquial Use
Used in casual conversation, not in professional or formal situations. 
Beating him at chess is like shooting fish in a barrel.
Pro Tip 2/3Implies Overpower
Suggests one has a big advantage, making success almost certain. 
With her speed, winning the race was like shooting fish in a barrel.
Pro Tip 3/3Metaphorical Image
It evokes a vivid metaphor, helping to visualize the ease of a task. 
For a skilled baker, making pies is like shooting fish in a barrel.