Following the meal Dejah Thoris and The Warlord played at jetan, the Barsoomian game of chess, which is played upon a board of a hundred alternate black and orange squares. One player has twenty black pieces, the other, twenty orange pieces. A brief description of the game may interest those Earth readers who care for chess, and will not be lost upon those who pursue this narrative to its conclusion, since before they are done they will find that a knowledge of jetan will add to the interest and the thrills that are in store for them. The men are placed upon the board as in chess upon the first two rows next the players. In order from left to right on the line of squares nearest the players, the jetan pieces are Warrior, Padwar, Dwar, Flier, Chief, Princess, Flier, Dwar, Padwar, Warrior. In the next line all are Panthans except the end pieces, which are called Thoats, and represent mounted warriors. The Panthans, which are represented as warriors with one feather, may move one space in any direction except backward; the Thoats, mounted warriors with three feathers, may move one straight and one diagonal, and may jump intervening pieces; Warriors, foot soldiers with two feathers, straight in any direction, or diagonally, two spaces; Padwars, lieutenants wearing two feathers, two diagonal in any direction, or combination; Dwars, captains wearing three feathers, three spaces straight in any direction, or combination; Fliers, represented by a propellor with three blades, three spaces in any direction, or combination, diagonally, and may jump intervening pieces; the Chief, indicated by a diadem with ten jewels, three spaces in any direction, straight, or diagonal; Princess, diadem with a single jewel, same as Chief, and can jump intervening pieces. The game is won when a player places any of his pieces on the same square with his opponent's Princess, or when a Chief takes a Chief. It is drawn when a Chief is taken by any opposing piece other than the opposing Chief; or when both sides have been reduced to three pieces, or less, of equal value, and the game is not terminated in the following ten moves, five apiece. This is but a general outline of the game, briefly stated. It was this game that Dejah Thoris and John Carter were playing when Tara of Helium bid them good night, retiring to her own quarters and her sleeping silks and furs. "Until morning, my beloved," she called back to them as she passed from the apartment, nor little did she guess, nor her parents, that this might indeed be the last time that they would ever set eyes upon her.