How to Solve a Bomb

So far, newest rules have overrided. The first rule was "only cut red", then the second rule allowed us to cut blue sometimes.

First wire is cut because it's blue and has no red "above".

Second wire is green, so it isn't cut.

Third is red and blue. Since it counts as red, it would normally be cut, therefore it isn't because it's immediately below green.

Fourth wire is blue. Wire above is blue and red, which means it counts as red. So this wire isn't cut.

So: only cut the first wire.