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

Example: Pin/self-unpin
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#

View in Helpmate Analyzer

FEN: 7k/8/4p3/2n1p3/4p3/1rb1K1n1/1B4q1/8

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