Two rooks are captured by the king of the opposite side after the line between them is closed by the piece of the same or opposite side.
Onkoud, Abdelaziz
Problémiste, 2014
1.Bh4
Be5
2.Kxf5
e3
3.Kg5
Bf4#
1.Be5
Kb3
2.Kxd5
e4+
3.Kc5
Bg1#
Prcic, Mike
Onkoud, Abdelaziz
StrateGems, 2015
a) 1.Bb5
Kxb4
2.Ke2
Kxc5
3.Kd3
Kxb6
4.Kc4
Ka5
5.Kc5
b3
6.Bc4
b4#
b) 1.Sb5
Kxb6
2.Kf4
Kxc5
3.Ke5
Kxb4
4.Kd6
Ka5
5.Kc5
b3
6.Sd6
b4#
FEN: 8/8/1rpn4/K1np4/1rbppp2/4pk2/1P6/3q4