Mutual interference between like-moving pieces standing on different lines. In other words, a pair of Holzhausen interferences between two pieces on the same square.
See also: Holzhausen interference; Grimshaw.
Alias: Würzburg-Plachutta interference.
Ravarini, Romolo
Sinfonie Scacchistiche, 1977
1st Prize
1.Bb5
Qh5
2.Re7
Ra2#
1.Qb5
Rg5
2.Be7
Qa8#