This is a blessed loss. Mate can be forced, but a draw can be achieved under the fifty-move rule.
To probe all KRPvKBP positions, these tables and their transitive dependencies are also required:
KQRvKBP · KQBvKRP · KRRvKBP · KRBvKRP · KBPvKP · KRBvKBP · KRPvKBB · KRPvKP · KRNvKBP · KRPvKBN · KBPvKR · KRPvKB