Final answer:
In the poem 'Sir Gawain and the Green Knight', Bertilak makes a wager with Gawain called the 'Exchange of Winnings' or the 'Green Girdle Game'. They agree to exchange whatever they have gained during the day, with Gawain giving Bertilak the animals he has received from Lady Bertilak, and Bertilak presenting Gawain with the animals he has caught during the hunt. However, on the third day, Gawain breaks the rules of the game by not giving Bertilak the green girdle, which becomes a test of Gawain's honor and loyalty.
Step-by-step explanation:
In the poem 'Sir Gawain and the Green Knight', Bertilak makes a wager with Gawain. The wager is a game called the 'Exchange of Winnings' or the 'Green Girdle Game'. According to the rules of the game, Bertilak and Gawain agree to exchange whatever they have gained during the day, while Gawain stays at Bertilak's castle. Bertilak goes out hunting each day and Gawain remains at the castle. Each day, Bertilak presents Gawain with the animals he has caught during the hunt, and Gawain gives him whatever he has received from Lady Bertilak while she seduced him in his absence. This includes a green girdle which is enchanted to protect the wearer from harm. On the third day, Gawain does not give the green girdle to Bertilak as the agreement states, in order to protect himself from the Green Knight's axe. This breaks the rules of the game and becomes the ultimate test of Gawain's honor and loyalty.