Helpmate in 3 w/twins

Helpmate in 3
b) Ka5 -> d1
c) Qc7 -> a4

Black moves first and both sides move cooperatively. White's 3rd move should mate Black.

For twins b) and c), alter the diagram as indicated, then solve again.

ultimate solution found, but it didn't give me eternal life

SOLV'D [heinzkat, doodinthemood]