anti-reversal

It is not possible to change the key and mate after the same defence in two phases.

Scheme:
1.A a 2.B
1.B a 2.A??

cyclic anti-reversal

Three White moves occur in three phases in cyclical pairs: first move and mate after the same defence.

Scheme:
1.A a 2.B
1.B a 2.C
1.C a 2.A

pseudo cyclic anti-reversal

Three White moves occur in three phases in cyclical pairs: first move and mate after different defences.

Scheme:
1.A a 2.B
1.B b 2.C
1.C c 2.A

Lačny, L’udovit
Pravda, 1981-82
1st Prize
FIDE Album 1980-82

mate in 2 moves