Two way interference on lines of a single piece, along a rank, file, or diagonal.
Abdurahmanović, Fadil
Stosic, Miroslav
Hernitz, Zvonimir
Mladenovic, Slobodan
Saletic, Slobodan
Sredba na solidarnosta, 1972
3rd Prize
1.Rf3+
Kg2
2.Rd5
Sc6#
1.Se3+
Ke2
2.Se5
e7#