There is probably no game in the world as fascinating and as complex as chess. ___51___ as the 'royal game’, this game and its variations have been played for many centuries. It may well be ___52___ game in the world. Where did this game originate from ? Some people have the opinion that the game ___53___ from Persia. This is because the word 'chess' is derived from the Persian word `shah' which means 'king'. However, ___54___ have argued that it could have been started by the Buddhists in India. According to Buddhist belief, any kind of killing is considered wrong and sinful. Thus, chess was actually invented as a substitute of war! No one, ___55___, knows the exact origin of the game.