There are nine classes in the three-person basketball game, and the playground can play four or five games at the same time. I hope it can be finished in a week. How to arrange the game?

I have a good plan.

Four games a day, just finished playing in seven days.

Nine categories, number 1-9.

Draw lots and divide into three groups

Each group plays round robin, and each team in the group meets once.

Each team has 6 games, and three teams have *** 18 games.

The two teams with the best record in each group play a qualifying match.

One game for each team, three games for three teams.

Each qualifying team will have a round robin.

* * * Six games and eliminated the last one.

In the final, the remaining two teams will face each other. * * * A game.

Ok, 18+3+6+ 1=28 games, according to at least 4 games a day, 7 days is just right. Moreover, the three-person basketball game has sufficient time and schedule. Moreover, this competition system depends more on strength than luck.

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