This is a cursed win. Mate can be forced, but a draw can be achieved under the fifty-move rule.
To probe all KBBNvKRP positions, these tables and their transitive dependencies are also required:
KBBNvKQR · KBBNvKRR · KBBNvKP · KBBNvKRB · KRPvKBN · KBBNvKRN · KRPvKBB · KBBNvKR