Without seeing the damage done, it's hard to tell the best way to repair it.
Looking at the top of the board, as you would hold the controller, the top left hole and trace of R3 runs to a small Resistor. Left side of it is the best first place to solder a wire to, then jumper it around to the back of the board to either of the those 2 leads of R3, doesn't matter which you use and it doesn't have to go to both for it to work, one of them will do.