In the course of the solution, two pieces of the same or different color exchange their places.
See also: Cyclic place exchange; Rovno theme.
Alias: Platzwechsel (Ger.); Exchange of places; Interchange.
Trillon, Jean-Michel
feenschach TT-25, 1972
2nd Prize
1.Rg8+
Kd7
2.Rb7+
Kxc6
3.Rbg7+
Kb5
4.Rb8+
Ka4
5.Rb2
Sc3#
Steudel, Friedrich Theodor
Staudte, Hans Hilmar
Aachener Nachrichten, 1970
1.Bd5
0-0-0
2.Ke4+
Kb1
3.Ra1+
Kxa1
4.Rf4
Re1#
Kniest, Peter
Kennst du die Bibel? TT-17, 1966
4th Prize
1.Kf2
Sg7
2.Ke3+
S3f5+
3.Ke4
Sh5
4.Rf4
Shg3#
Piliczewski, Bogusz
The Problemist, 2013
2nd HM
1.Sb1
Sxe4
2.Sc3
Sc2
3.Sexd5
Sd2#
1.Sxd5
Sd1
2.Sc3
Sc2
3.Sb3
Sde3#
1.Sb3
Sxf3
2.Sd4
Sa2
3.Sxd5
Sd2#
1.Sc2
Sxf5
2.Sd4
Sa2
3.S2b3
Se3#