Simultaneous move of King and Rook, both of which had to be stationary on their home squares up to that point in the game.
See also: Artificial castling; Valladao task.
Albertz, Heinrich
Henke, Karl
Die Schwalbe, TT-86, 1948
1st Prize
1...Qxh4
2.0-0
Qh7#
1.Rh7
0-0
2.Re7
Qc8#
Steudel, Friedrich Theodor
Staudte, Hans Hilmar
Aachener Nachrichten, 1970
1.Bd5
0-0-0
2.Ke4+
Kb1
3.Ra1+
Kxa1
4.Rf4
Re1#
Paliulionis, Viktoras
Csak-Majoros-Pasztor, G. Bakcsi-85 JT (h#4-6 theme), 2018
1st Prize
1.Rd8
Bc8
2.Rb5
Ba6
3.Rd6+
Kb7
4.Kd7
Kb8
5.Kc6
Kc8
6.Qc5
Bb7#
1.Qe7
Bd1
2.Qa7
Kd6
3.0-0-0+
Ke6
4.Kb7
Ba4
5.Rb8
Kd7
6.Ba6
Bc6#
Zezza, Isidoro
CarrĂ , Arturo
2nd FIDE Tournament, 1959
1st Prize
1.0-0-0
Ka2
2.b1=R
Se4
3.Sc7+
c4
4.bxc3 e.p.+
Ka3
5.Rb8
Sd6#