A piece could play on a particular square at once, but for some reason it does not occupy it immediately, but in some subsequent moves.
A modified helpmate theme in the 2nd WCCT 1978-83.
See also: Wigwag; Step-by-step Bristol.
Sonnenfeld, Felix Alexander
Novis, Mario filho
2nd WCCT E (1980-1983), 1983
1st Place
1.Rc4
Sbd4
2.Rb4+
Rd5#
1.Rd5
Sd2
2.Rd3+
Sc4#
Kricheli, Josif
Ideal-Mate Review, 1983
1st Prize
a) 1.Rd6
Kf4
2.Ra6
Kf5
3.Kc6
Ke6
4.Rb6
Rc8#
b) 1.Rf2
Rh1
2.Bd1
Ke6
3.Kf3
Kf5
4.Be2
Rh3#
Jones, Christopher James Austin
Schach, 2011
1st Prize
1.Sc4
Bxa2
2.Ke4
Bxc4
3.Ra2
Be6#
1.Rc4
Rxa4
2.Ke6
Rxc4
3.Sa4
Rxf4#
FEN: 8/3p4/3P2p1/1pP1pk2/bR3p2/1B1pp3/rnrp2P1/1K1n4
External links:
Loshinsky, Lev
Korolkov, Vladimir
Problem, 1973
1st Prize
1.a5
Bg4
2.Ka6
Bxf5
3.Bd5
Be6
4.Sf5
Bd7
5.Bf7
Bc8#
Paliulionis, Viktoras
Match Latvia-Lithuania-Leningrad, 1986
1st-2nd Prize
a) 1.Qc5+
Sd5
2.Qa3
Sb6#
b) 1.Qe3+
Be4
2.Qa3
Bc6#
Csák, János
idee & form, 1991
4th HM
1.Bb3
Sb2
2.Bc2+
Sd3
3.Bd1
Sf4#
1.Rh1
Se3
2.Rhg1+
Sg2
3.Rgf1
Sf4#
1.Kd3
Sb6
2.Ke3
Sd5+
3.Ke2
Sf4#
Abdurahmanović, Fadil
Mihajloski, Zlatko
A. Selivanov-50 JT, 2017
4th Prize
1.Qa1
Bb2
2.Bd6
Be5
3.Qd4
Bh2
4.Bg3
fxg3
5.Ke5
g4#