TST

10 problems here, rated 7.2 to 9 on our scale (National Olympiad, round 2 to IMO level). 10 of them ask for a proof.

Algebra 3Combinatorics 2Geometry 2Number theory 3

#	Topic	Diff	Type	Year
1	Algebra	7.3	proof	—	open
2	Combinatorics	7.3	proof	—	open
3	Number theory	7.7	proof	—	open
4	Number theory	8.6	proof	—	open
5	Geometry	8.6	proof	—	open
6	Number theory	8.8	proof	—	open
7	Algebra	8.9	proof	—	open
8	Geometry	8.9	proof	—	open
9	Algebra	9.0	proof	—	open
10	Combinatorics	9.0	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.