Library /Dutch Mathematical Olympiad

Dutch Mathematical Olympiad

31 problems here, rated 4.4 to 7.3 on our scale (AIME to National Olympiad, round 2). 19 of them ask for a proof.

Algebra 5Combinatorics 12Geometry 7Number theory 7

#	Topic	Diff	Type	Year
1	Algebra	4.4	answer	—	open
2	Algebra	4.7	answer	—	open
3	Algebra	4.7	answer	—	open
4	Number theory	4.7	answer	—	open
5	Geometry	4.8	answer	—	open
6	Geometry	4.9	answer	—	open
7	Geometry	4.9	answer	—	open
8	Combinatorics	4.9	answer	—	open
9	Number theory	5.0	answer	—	open
10	Number theory	5.0	proof	—	open
11	Combinatorics	5.1	answer	—	open
12	Number theory	5.2	answer	—	open
13	Geometry	5.5	proof	—	open
14	Combinatorics	5.5	answer	—	open
15	Number theory	5.5	proof	—	open
16	Algebra	5.8	proof	—	open
17	Algebra	5.9	proof	—	open
18	Number theory	6.0	proof	—	open
19	Geometry	6.0	proof	—	open
20	Combinatorics	6.1	proof	—	open
21	Combinatorics	6.5	proof	—	open
22	Combinatorics	6.6	proof	—	open
23	Geometry	6.6	proof	—	open
24	Geometry	6.7	proof	—	open
25	Combinatorics	6.8	proof	—	open
26	Combinatorics	6.8	proof	—	open
27	Combinatorics	6.8	proof	—	open
28	Combinatorics	6.9	proof	—	open
29	Combinatorics	7.0	proof	—	open
30	Combinatorics	7.2	proof	—	open
31	Number theory	7.3	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.