The Chessmen of Mars by Edgar Rice Burroughs

Clear and sweet a trumpet spoke across The Fields of Jetan. From The High Tower its cool voice floated across the city of Manator and above the babel of human discords rising from the crowded mass that filled the seats of the stadium below. It called the players for the first game, and simultaneously there fluttered to the peaks of a thousand staffs on tower and battlement and the great wall of the stadium the rich, gay pennons of the fighting chiefs of Manator. Thus was marked the opening of The Jeddak's Games, the most important of the year and second only to the Grand Decennial Games.

Gahan of Gathol watched every play with eagle eye. The match was an unimportant one, being but to settle some petty dispute between two chiefs, and was played with professional jetan players for points only. No one was killed and there was but little blood spilled. It lasted about an hour and was terminated by the chief of the losing side deliberately permitting himself to be outpointed, that the game might be called a draw.