1. The problem statement, all variables and given/known data Determine the equivalent resistance of this circuit. http://img444.imageshack.us/img444/5137/19910965.png [Broken] 3. The attempt at a solution So I realize that both of the 6 ohm resistors on each side are in series with each other. However, I am stuck after that part since I do not recognize a series or parallel connection from that point onwards. This is really in part due to the empty stretch of wire connecting the left and right vertical wires to the middle two wires. There are obviously no other resistors the 12 ohm equivalent resistors can connect to; there are also no two nodes that are shared by the 12 ohm equivalent resistor and another resistor. Any clue as to how to proceed would be greatly appreciated.