Black pieces move across the square where black king stood in the initial position.
See also: Roentgen theme.
Feather, Christopher John
Schach-Aktiv, 1991
1.Kd4
Bb8
2.Rc2
Rxd3#
1.Kc4
Rb8
2.Bg1
Bxd3#
Feather, Christopher John
Moultings 2, 1991
1.Kf5
Sd5
2.Rxh6
Sxh6#
1.Ke7
Sd6
2.Bxg8
Sxg8#
Jones, Christopher James Austin
Springaren, 2012
1st Prize
1.Kd5
f4
2.Rb6
Rc6
3.Bd4
Bxg2#
1.Kd6
d4
2.Bb7
Bc6
3.Rc7
Rxf6#
Gurov, Valery
Probleemblad, 2003
1st Prize
1.Ke4
Bxb6
2.Rf4
Re3#
1.Ke6
Ra7
2.Re5
Rxd6#
1.Kf4
Bxd1
2.Be4
Be3#
1.Ke5
Rxd2
2.Qe6
Bxd6#
Ocampo, Raul
597, OzProblems.com 30 Apr. 2022, 2022
1.Kg3
Sh3
2.Qg5
Sg1
3.Kf4
Se2#
1.Kg5
Se2
2.Bg3
Sg1
3.Kf4
Sh3#
FEN: 1b6/8/1p2p3/1p6/3KPk2/3P1P2/6P1/2q3N1