Touch-move rule move or capture the first of the pieces that they touched. If it cannot be determined whether he touched his own piece or the opponent's piece first, it is assumed that he touched his own piece first. If a player touches more than one piece, he must move or capture the first piece that can be legally moved or captured. An exception to that is an attempted illegal castling; in that case the king must be moved if possible, but otherwise there is no requirement to move the rook. When castling, the king must be the first piece touched. If
Strategic move Strategic move A strategic move in game theory is an action taken by a player outside the defined actions of the game in order to gain a strategic advantage and increase one's payoff. Strategic moves can either be "unconditional moves" or "response rules". The key characteristics of a strategic move are that it involves a "commitment" from the player, meaning the player can only restrict her own choices, and that the commitment has to be "credible", meaning that once employed it must be in the interest of the player to follow through with the move. Credible moves should also be