relative pin

English
a b c d e f g h
8{{{square}}} black rook{{{square}}} black king8
77
6{{{square}}} black knight6
5{{{square}}} white bishop5
4{{{square}}} white knight4
33
22
1{{{square}}} white queen{{{square}}} white king1
a b c d e f g h
There is an absolute pin on the black knight as moving it would illegally expose the black king to check from the white bishop.
There is a relative pin on the white knight as moving it would allow capture of the white queen by the black rook.

Noun

relative pin (plural relative pins)

  1. (chess) A pin in which moving away the pinned piece would allow capture of a piece other than the king.

See also

Further reading
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