Qa4!!
Ongoing Game against Shredder Cell phone
Bxc5 draws at best play, with bishop endgame and symmetrical position. Ra8, however, is effective - it activates the Black light squared bishop with Ba2, trapping White's b1 Rook, ensuring you end the starting exchange with at least 2 pawns up, leaving you ahead in material with 1 pawn.

This is one possible outcome. All of this isn't from "me". I put the position in my Shredder and when I got stuck I asked it for a suggestion. Sometimes I blundered and took a move back and keep trying until I found one that worked. ha. (Or I could have just looked for a long time at the positions).
By the way, I put my shredder on ELO 1622 which is about what your is set at.
Since I am playing against my cell phone -I would say that it is ethical to ask for help since I am trying to improve. I could also force a draw since the Shred' seems more than willing to just repeat moves.