Library /Bulgarian National Mathematical Olympiad

Bulgarian National Mathematical Olympiad

15 problems here, rated 5.5 to 7.8 on our scale (AIME, harder to National Olympiad, round 2). 15 of them ask for a proof.

Algebra 3Combinatorics 4Geometry 6Number theory 2

#	Topic	Diff	Type	Year
1	Number theory	5.5	proof	—	open
2	Geometry	5.6	proof	—	open
3	Geometry	5.7	proof	—	open
4	Geometry	5.7	proof	—	open
5	Geometry	5.8	proof	—	open
6	Algebra	6.0	proof	—	open
7	Geometry	6.3	proof	—	open
8	Algebra	6.3	proof	—	open
9	Algebra	6.4	proof	—	open
10	Combinatorics	6.5	proof	—	open
11	Combinatorics	6.5	proof	—	open
12	Geometry	6.7	proof	—	open
13	Number theory	7.0	proof	—	open
14	Combinatorics	7.7	proof	—	open
15	Combinatorics	7.8	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.