This is a cursed win. Mate can be forced, but a draw can be achieved under the fifty-move rule.
To probe all KQQPvKRB positions, these tables and their transitive dependencies are also required:
KQQQvKRB · KQPvKRB · KQQRvKRB · KQQPvKB · KQQBvKRB · KQQPvKR · KQQNvKRB · KQQvKRB