A situation when a piece or a pawn cannot or is forbidden to move because it could expose the king for an attack or would expose a more valuable piece behind it to capture.
In the following example Qa3 and Re7 are pinned.
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Quotes of the Day
I think I would beat Tal pretty easily. Fischer would be more difficult, but I think I could beat him too.
Magnus Carlsen
I think that ACP is a small clique, which gives power to more cliques.
Nigel Short 2016
He has weaknesses, as everyone does, but far fewer than those around him.
Veselin Topalov 2016
Now, at 51, in my life I have reach the stage between the middlegame and the endgame. But I don’t have the feeling that I am in the endgame already.
Boris Spassky 1988 NIC
Never felt more like singin’ the blues, cos I never thought that I’d ever lose…
Vladimir Kramnik 2017