The Process of Decision Making in Chess Volume 2: Practice positions and solutions. Position 6.8.1

Provide an assessment of the following position, black to play:

B pin allows QXd W plays RD1, therefore BxB first then Qxd threatening Rxep. WHite doesn't have time to play Q x b

 material even. white bishop pinned. black bishop not protected (other than the pin). queen exchanges double pawns. d4 pawn ripe for the pickins. Black bishop in superior position to white bishop. ... pf4. pxp bxp. kf1 bxb. pxb Qc7. would be my plan.