You are supposed to know the rules before you play in a tournament. Nevertheless, it happens regularly that a player does something illegal. This may lead to a sanction.
Touch and move: If you touch a piece, you have to move it, except if it is impossible, of course. As long as your hand has not left the piece on a new square, it can be placed on any accessible square. From the moment, you let it go, it is played. If you don’t know this rule, it can be an expensive one. As an example, watch this game that went:
1. e4 – e5
2. e4xd5 – Qxd5
Then, white, by mistake, touched his king. That meant, he had to play it. The king could only move to e2, then black moved his queen to e4 and it was a checkmate. A very humiliating way to lose. So in … Read More