Calculating Equivalent Resistance for a Complex Circuit - CircuitLab Homework

[Gauss M.D.]

Homework Statement

Find the equivalent resistance of:

https://www.circuitlab.com/circuit/5s3ebn/screenshot/1024x768/

Homework Equations

The Attempt at a Solution

I've simplified it a bit already... Just very confused in regards to which resistances are in parallel since they all connect to each other at different nodes.

 

[Gauss M.D.]

If it wasn't for R6, the whole problem would be easy... Uuuughh

 

[UltrafastPED]

This circuit does not include any resistors in parallel or series ... thus you must use delta-Y transforms to simplify it:
http://en.wikipedia.org/wiki/Y-Δ_transform