A piece makes a critical move. Another piece of the same colour moves on the critical square in order to move to an opposite direction. The first piece is not supporting the other. The difference to Loyd Clearance is that the pieces are of equal strength.
See also: Brunner-Turton doubling; Loyd's clearance.
Kovács, Norbert
Magyar Sakkvilág, 1934
HM
1.Ra1
Bxc3
2.Rbb1
Be4
3.Rh1
Sd6
4.Rh5
Sf7#
Mihajloski, Zlatko
Abdurahmanović, Fadil
Maroc Echecs, 2011
3rd HM
1.Rb1
Kf8
2.b4
Bg8
3.b3
Bxb3
4.Reb2
Ba4
5.Rb8
Ke7
6.R1b7
Bd7#
Semenenko, Oleksandr
A. Kirichenko-60 JT, 2015
4th-5th Prize
1...e4
2.Be3
exf5
3.a1=B
fxe6
4.Bad4
exf7
5.Ba7
fxe8=Q
6.Beb6
Qc8#
FEN: 1n2r3/5p2/kbn1r3/pb3p2/8/3p1q2/p3P3/4K3
Paliulionis, Viktoras
Die Schwalbe, TT-214, 2019
2nd Prize (Miniatures)
1.Qe2
Be4+
2.Qdd3
Kf6
3.Kd1
Ke5
4.Qa6
Kd4
5.Sd2
Kc3
6.Qe1
Kb2
7.Qae2
Bc2#