Unblocking sacrifice
A piece captures another piece, allowing different enemy piece (other than a pawn) to move to the unblocked square, making a second capture.
See also: Active sacrifice; Annihilation; Square-clearance by capture.
Alias: Sacrificial square vacation.
Feather, Christopher John
Moultings 2, 1991
h#2 2.1... (7+8)
1.Kf5
Sd5
2.Rxh6
Sxh6#
1.Ke7
Sd6
2.Bxg8
Sxg8#
Kniest, Peter
Aachener Nachrichten, 1967
h#2* (6+5)
1...Bxc3
2.Kxc3
Rc4#
1.Qb4
Rxc3+
2.Kxc3
Rc4#
Kniest with an unblocking sacrifice.
Molnar, Arpad
C. Feather-50 JT, 1998
4th Prize
h#2 b) wSa4→a3
(7+11)
a) 1.Qxe5+
Kxe5+
2.R1d2
Rf1#
b) 1.Bxf5
Kxf5+
2.R6d2
Sd3#
White Kniest with an unblocking sacrifice.