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

Example: Unblocking sacrifice
h#2 2.1... (7+8)

1.Kf5 Sd5 2.Rxh6 Sxh6#
1.Ke7 Sd6 2.Bxg8 Sxg8#

View in Helpmate Analyzer

FEN: 3r1nB1/3p1N2/r3kN1R/7P/4qP2/4n3/b7/4K3

External links:

Kniest, Peter

Aachener Nachrichten, 1967

Example: Unblocking sacrifice
h#2*  (6+5)

1...Bxc3 2.Kxc3 Rc4#

1.Qb4 Rxc3+ 2.Kxc3 Rc4#

Kniest with an unblocking sacrifice.

View in Helpmate Analyzer

FEN: 8/8/8/B7/3R4/RqpP4/2kb4/KnN5

External links:

Molnar, Arpad

C. Feather-50 JT, 1998

4th Prize

Example: Unblocking sacrifice
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.

View in Helpmate Analyzer

FEN: 8/8/3r1n1B/b1R1NR1p/N4Kpp/1pq5/1Pb5/2kr4

External links: