Homebase
All pieces of one or both sides in the diagram are on their initial game-array squares.
See also: Home-coming.
Foster, Geoff
(after T. R. Dawson)
The Problemist Supplement, 2017
h#4.5 (2+6)
1...Bf4
2.Ke7
Bxc7
3.Qe8
Bf4
4.Kd8+
Be3
5.Be7
Bb6#