Dolginovich theme
Reversed or half a move shifted kinds of pieces that play (aBcD-dCbA or aBcD-bCdA, lowercase stand for black, uppercase for white pieces).
Dolginovich, Nikolay
Ryazansky Komsomolets, 1980
1st Prize
h#2 2.1... (4+4)
1.Ra2+
Kc1
2.c5
Sb5#
1.Sa2
b4+
2.Kb2
Rb3#