Pin/self-unpin
In the course of the solution, a piece is first pinned, then self-unpinned again.
See also: Pin/unpin; Self-pin/unpin; Self-pin/self-unpin.
Mihajloski, Zlatko
Abdurahmanović, Fadil
StrateGems, 2011
1st Prize
h#6.5 (2+9)
1...Ba3
2.Sd7
Bd6
3.Sf6
Bxe5
4.Bb4+
Kf4
5.Bf8
Kg5
6.Bg7
Kg6
7.Sg8
Bxg7#