Vijetnam
13 problems here, rated 4.9 to 7.3 on our scale (AIME to National olympiad, round 2). 13 of them ask for a proof. Years covered: 2007–2011.
| # | Topic | Diff | Type | Year | |
|---|---|---|---|---|---|
| 1 | Algebra | 4.9 | proof | 2011 | open |
| 2 | Algebra | 5.2 | proof | 2007 | open |
| 3 | Algebra | 5.6 | proof | 2011 | open |
| 4 | Geometry | 6.0 | proof | 2007 | open |
| 5 | Algebra | 6.1 | proof | 2007 | open |
| 6 | Algebra | 6.4 | proof | 2011 | open |
| 7 | Algebra | 6.4 | proof | 2007 | open |
| 8 | Geometry | 6.6 | proof | 2011 | open |
| 9 | Geometry | 6.7 | proof | 2011 | open |
| 10 | Combinatorics | 6.8 | proof | 2007 | open |
| 11 | Geometry | 6.9 | proof | 2007 | open |
| 12 | Algebra | 7.0 | proof | 2011 | open |
| 13 | Geometry | 7.3 | proof | 2011 | 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.