bagatelle

bagatelle \bag-uh-TEL\, noun:
1. A trifle; a thing of little or no importance.
2. A game played with a cue and balls on an oblong table having cups or arches at one end.

You know, the difference between red wires and blue wires always seemed like a bagatelle... until I had to diffuse this bomb.
This is harder than playing a game of bagatelle without the cue and balls on an oblong table having cups or arches at one end!