Like-moving black and white pieces stand next to each other in direction of their movement. At least three times when the former moves away along their common line the latter follows it by moving to the adjacent square.
See also: Magnet.
Alias: Loshinsky theme.
Meinking, Dan
U.S. Problem Bulletin, 1993 (v)
1.Rg3
Rf3
2.Qf5
Rxf5
3.Rg2
Rf3#
1.Rf3
Re3
2.Rg3
Rxe6
3.Rg2
Re3#
1.Qg4
Bf5
2.Rd3
Bxd3
3.Qg2
Bf5#
1.Qf5
Be6
2.Qg4
Bxb3
3.Qg2
Be6#
FEN: 8/3B4/2P1q3/8/P6p/Rr5k/4P2n/K7
Bakcsi, György
Europe Echecs, 1971
1st Prize
a) 1.Rcf3
Qe3
2.d3
Qxe4#
b) 1.Rce3
Qd3
2.c3
Qxd4#
c) 1.Rcg3
Qf3
2.e3
Qxf4#