Duel Tournament: Treasures of the Sands, Registration.

I suggest dividing everyone into 3 groups, with 4 people in each group. From each group, 2 people will be selected, resulting in 6 participants in the semi-finals, forming 3 pairs. Each person plays against the person they are paired with. After the semi-finals, 3 people advance to the final. Here, each person plays against everyone else, and the winner is the one with the most wins. This will clearly determine 2nd and 3rd place. P.S. Playing against everyone would take too long and be tedious. Or, at least, 2 groups of 6 people.