Forced movement is a term used in the game of chess to describe a move that must be made by a player. TICS is an acronym for 'Tactical Initiative in Chess Strategy', which is a strategy used to gain an advantage in the game of chess by forcing the opponent to make a move that they would not normally make. This strategy can be used to gain an advantage in the game, as it forces the opponent to make a move that they may not have planned for.