1. The problem statement, all variables and given/known data All resistors have the same value, 'R' 2. Relevant equations I don't think mesh/loop analysis or nodal analysis is applicable here, I think I'm just having a hard time seeing how the series-parallel connections work. 3. The attempt at a solution I know the top left two are in parallel and then they come back together, and I know all the corners are in series, it's just the middle box that throws me.