Singapur

23 problems here, rated 4.4 to 6.8 on our scale (AIME to National Olympiad). 23 of them ask for a proof.

Algebra 4Combinatorics 5Geometry 8Number theory 6

#	Topic	Diff	Type	Year
1	Geometry	4.4	proof	—	open
2	Geometry	4.4	proof	—	open
3	Geometry	4.5	proof	2015	open
4	Geometry	4.5	proof	—	open
5	Geometry	4.7	proof	2015	open
6	Number theory	4.7	proof	2015	open
7	Algebra	4.7	proof	—	open
8	Number theory	4.9	proof	2015	open
9	Algebra	5.0	proof	—	open
10	Geometry	5.1	proof	—	open
11	Geometry	5.2	proof	2015	open
12	Number theory	5.3	proof	2015	open
13	Geometry	5.4	proof	—	open
14	Number theory	5.5	proof	—	open
15	Algebra	5.6	proof	—	open
16	Combinatorics	5.6	proof	2015	open
17	Algebra	5.6	proof	2015	open
18	Combinatorics	6.1	proof	—	open
19	Number theory	6.2	proof	2015	open
20	Combinatorics	6.4	proof	—	open
21	Combinatorics	6.5	proof	—	open
22	Number theory	6.5	proof	2015	open
23	Combinatorics	6.8	proof	2015	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.