10 What's the ranking of the team points tournament? It's quite difficult. Just try it.

It should be a group cycle, that is, divided into two groups, using the integral system, 20 games.

You have to play 45 games without grouping. Then: First, draw lots to decide the number 1- 10, and arrange it for 9 rounds, which should be:

First round, second round, third round, fourth round ... ninth round and so on, pay attention to 1.

1- 10 1-9 1-8 1-7

2-9 10-8 9-7 8-6

3-8 2-7 10-6 9-5

4-7 3-6 2-5 10-4

5-6 4-5 3-4 2-3