Sharp theme
The first white move forms a battery, which is on the second white move abandoned by move of the rear piece (without mate!). The black king is checkmated on a square the unused battery aimed at.
Robert Sharp is not an Australian composer from Wagga Wagga but a pseudonym for Hans-Peter Reich and Achim Schöneberg (both from Germany, *1967 and 1955).
Sharp, Robert
Die Schwalbe, 1993
h#2.5 b) wRd8
(4+5)
a) 1...Bxe7
2.Bf7
Bg5
3.Ba2
Bc1#
b) 1...Rxd3
2.Sc4
Rd1
3.Sb2
Ra1#