In professional and serious amateur games, a player who makes an illegal move loses immediately.

Judges at the competition watch closely for illegal moves from the group or any individual member.

The white player switches the board around and then makes one last illegal move to end the game.

The first player to make an illegal move loses.

She does whatever it takes to win, including illegal moves.

Karpov, with very little time remaining, did not see that he was in check and played the illegal move 54.

At one time the rule also required the player who played an illegal move to move his king.

Yes, it would be an "illegal" move - but time has really run out now.

If a child raises his hand, the director will walk over to confirm the win or to examine an alleged illegal move.

Sheridan was also "inside the square" at the time the ball reached him, in a third illegal move.