Mirror mate
Each of the eight squares adjacent to the king is unoccupied in the mate.
Grubert, Harald
Schachmaty (Baku), 1990
1st Prize
h#4 b) wSd4→f5
(5+1)
a) 1.Kf1
S4e6
2.Ke2
Kb4
3.Kd3
Sf4+
4.Kd4
Sc6#
b) 1.Kg2
f4
2.Kf3
Se6
3.Ke4
f3+
4.Kd5
Sc7#
Alaikov, Venelin
diagrammes, 2001
2nd Prize
h#2 2.1... (6+9)
1.Sd4+
Ka4
2.Bd8
Se8#
1.Sc7
Kc2
2.Bf2
Sf5#
Bakcsi, György
Zoltán, László
The Problemist, N. Macleod MT, 1994
1st Prize
h#2 3.1... (4+11)
1.c4
Rxc4
2.Rgf3
Rxh5#
1.d4
Rxd4
2.Rbb3
Rxc5#
1.h4
Rxh4
2.Rdb3
Rxd5#