An unguard of a mating square or line by anticipatory closing a prospective guard line.
See also: Anticipatory pin; Anticipatory self-unpin; Anticipatory unpin.
Feather, Christopher John
Moultings 5, 1991
1.Qxg8
Rf3
2.Ke6
Re2#
1.Qxf8
Bc4
2.Kf6
Bc3#
Csák, János
Mat-Pat, 1988
4th Prize
1.Se5+
Kg3
2.Qf5
Sd5#
1.Sf6+
Kf3
2.Qe6
Sg6#
Feather, Christopher John
Moultings 6, 1991
1.Sd7
Qxd6+
2.Kc4
Qd3#
1.Rf3
Qxe4+
2.Kc5
Qxc6#
Büsing, Günter
Moser, Hans
Nieroba, Manfred
Buckenhofer, Andreas
feenschach, 1987
1st HM
1.Be3
Ra1
2.Rb1
g3
3.Rxb3
Rg1
4.Rc3
Bd1#