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To make the tournament more dynamic, I suggest dividing the six participating teams into 2 groups of 3 teams each. After a round-robin battle in each group, hold intergroup matches between the teams that took 1st, 2nd, and 3rd places in the groups, respectively. That is, matches for 1st-2nd place, 3rd-4th place, and 5th-6th place.
As a result, only 3 games need to be played, not 5.