You Touch, You Play – Double Touch
One of those imperatives is; once you touch a piece you are
required to make a move with that piece. There is no way to take back you
decision and attempt to make a move with another material. Unless of course the
piece you have touched has legally allowed spaces to advance. Once you let go
the action is completed and the piece cannot be touched again until the
competitor completes their turn of play.
I was watching the @Netflix Documentary Queen of Chess and
realised that this situation occurred at a major tournament. Thus the
"double touch" incident refers to a controversial 1994 chess match
between Grandmaster Garry Kasparov and female chess prodigy Judit Polgár.