bb4 can be blocked by queen
bc4 queen takes bishop
qe2 can be taken by the rook
qa1 can be blocked by queen
qh1 and qd1 are the only checkmates
Assuming we're looking for Mate in 1, Bb4 is M2, Bc4 is M4, Qe2 is M4, Qa1 is M2, and Qd1 isn't a possible move on the board from the start; therefore the only Mates in 1 are Qh1# and Qd2#. I'm assuming "qd1" is a typo.
yeah, meant to say qd2#
bb4 can be blocked by queen
bc4 queen takes bishop
qe2 can be taken by the rook
qa1 can be blocked by queen
qh1 and qd1 are the only checkmates
Assuming we're looking for Mate in 1, Bb4 is M2, Bc4 is M4, Qe2 is M4, Qa1 is M2, and Qd1 isn't a possible move on the board from the start; therefore the only Mates in 1 are Qh1# and Qd2#. I'm assuming "qd1" is a typo.