Premove

In online chess, a premove is a move input made by a player during their opponent's turn, taking effect only after the opponent moves. A premove is performed in the same way as a normal move, most commonly by dragging the piece to its destination, or by clicking the piece and then clicking its destination.

Premoving is available on chess websites such as the Internet Chess Club, the Free Internet Chess Server, Chess.com, and Lichess.

The Internet Chess Club allows players to block any players with premoving enabled.^[1]