China Mathematical Competition (Extra Test)
12 problems here, rated 4.9 to 7 on our scale (AIME to National Olympiad, round 2). 11 of them ask for a proof.
| # | Topic | Diff | Type | Year | |
|---|---|---|---|---|---|
| 1 | Geometry | 4.9 | proof | — | open |
| 2 | Geometry | 6.0 | proof | — | open |
| 3 | Geometry | 6.0 | proof | — | open |
| 4 | Combinatorics | 6.0 | answer | — | open |
| 5 | Algebra | 6.1 | proof | — | open |
| 6 | Number theory | 6.3 | proof | — | open |
| 7 | Algebra | 6.3 | proof | — | open |
| 8 | Algebra | 6.8 | proof | — | open |
| 9 | Geometry | 6.8 | proof | — | open |
| 10 | Algebra | 7.0 | proof | — | open |
| 11 | Algebra | 7.0 | proof | — | open |
| 12 | Geometry | 7.0 | proof | — | open |
These are sorted by difficulty within the competition, but they aren't a course.
The track is the route through, drawn from all the sources at once.