Piece A leaves square a to allow a second piece B to pass over square a to its destination. After the move of piece B, the thematic piece A returns to square a.
In the basic form of the theme, piece B moves across square a. In the second form of the Klasinc theme (type 2), piece B reaches its final destination in two moves, first playing to square a.
Fox, Charles Masson
The Chess Amateur, 1922
1st Prize
1.Be5
Kd5
2.Qb1
Ke6
3.Bb2
Kxf5#
Telkes, Imre
Magyar Sakkvilág, 1937
Comm.
1.Ra1
Rb1
2.Rh1
Rg1
3.Rd1
Rg4
4.Rhf1
Re4#
Páros, György
Fleck, Ferenc
O. Bláthy MT, 1940
1st-3rd Prize
1.Rg5
Bh4
2.Qg4
Bxh3
3.Qg2
Bxd7
4.Rg3
Bd8#
Abdurahmanović, Fadil
Orbit, 2006
2nd Prize
1.Sd1+
Sf2
2.Sf6
Se4
3.Sf2
Sd6
4.S6e4
Sf5#
Semenenko, Valery
Belgrade Internet Tourney, 2017
4th Prize
1.Bf5
Bg8
2.Be6
Qa1#
1.Kf7
Bxf3
2.Bb3
Bd5#
Abdurahmanović, Fadil
Die Schwalbe, 2010
1st Prize
1.Be6
Kd1
2.Qe5
Ke2
3.Kf5+
Kf3
4.Bb3
Bc4
5.f6
Bg8
6.Be6
Bh7#
Paliulionis, Viktoras
Die Schwalbe, 1988
Comm.
1.Ba8
Bb7
2.Rh2
Kd7
3.g3
Bc8
4.Kg2
Ke6
5.Kh3
Kf5
6.Bg2
Kg5#
Martin Anton, Luis Miguel
feenschach, 2012
1.Be3
Re1
2.Bc1
Re8
3.Be3
Re1
4.Bc1
R1e7#
FEN: 8/6k1/1p1p2p1/ppn3Pp/5p2/p1K5/5n2/RRb5
Chepizhny, Viktor
The Problemist, 2018
6th Prize
1...Sg3
2.Kc6
Sfe4
3.Bf2
Sd6
4.Bb6
Sge4
5.Bd7
b5#
Abdurahmanović, Fadil
Mat Plus, 2008
3rd HM
1.Se3
Bxc2
2.Ra1
Bb1
3.Bb3
Bc2
4.Re1
Bb1
5.Bd1
Bd3#
Ott, Markus Johannes
Geissler, Norbert
Die Schwalbe, 1992
1.Rc8
Rf6
2.R3c7
Rc6
3.Sa2
Rc2
4.Rc3
Rc1
5.R8c4
Rxb1#
Maslar, Zdravko
feenschach, 1986
2nd HM
1.Sb4
Ra1
2.Sa2
Bc6+
3.Ka6
Rxa2#
1.Bh3
Bh1
2.Bg2
Ra5+
3.Kc6
Bxg2#
Semenenko, Oleksandr
A. Kirichenko-60 JT, 2015
4th-5th Prize
1...e4
2.Be3
exf5
3.a1=B
fxe6
4.Bad4
exf7
5.Ba7
fxe8=Q
6.Beb6
Qc8#
FEN: 1n2r3/5p2/kbn1r3/pb3p2/8/3p1q2/p3P3/4K3
Bakcsi, György
Die Schwalbe, 1967
1st Prize
1.h2
Rg1
2.h1=Q
Rf5
3.Qh8
Rgg5
4.Qxe5
Rxe5#
Paliulionis, Viktoras
StrateGems, 2019
2nd HM
1.Rh7
Bg7
2.Re8+
Kd7
3.Se5+
Kd6
4.Sd7
Be5
5.Kc8
Kc6
6.Kd8
Kb7
7.Rhe7
Bc7#