Library /Estonia — Open Contests

Estonia — Open Contests

68 problems here, rated 4.3 to 7.3 on our scale (AIME to National Olympiad, round 2). 68 of them ask for a proof.

Algebra 20Combinatorics 14Geometry 17Number theory 17

#	Topic	Diff	Type	Year
1	Number theory	4.3	proof	—	open
2	Number theory	4.4	proof	—	open
3	Algebra	4.5	proof	—	open
4	Number theory	4.6	proof	—	open
5	Geometry	4.6	proof	—	open
6	Algebra	4.7	proof	—	open
7	Algebra	4.7	proof	—	open
8	Algebra	4.8	proof	—	open
9	Algebra	4.8	proof	—	open
10	Algebra	4.8	proof	—	open
11	Geometry	4.8	proof	—	open
12	Algebra	4.9	proof	—	open
13	Number theory	4.9	proof	—	open
14	Number theory	4.9	proof	—	open
15	Geometry	4.9	proof	—	open
16	Algebra	4.9	proof	—	open
17	Combinatorics	5.0	proof	—	open
18	Number theory	5.0	proof	—	open
19	Combinatorics	5.0	proof	—	open
20	Geometry	5.0	proof	—	open
21	Combinatorics	5.1	proof	—	open
22	Number theory	5.1	proof	—	open
23	Algebra	5.1	proof	—	open
24	Algebra	5.2	proof	—	open
25	Geometry	5.2	proof	—	open
26	Geometry	5.2	proof	—	open
27	Algebra	5.2	proof	—	open
28	Algebra	5.2	proof	—	open
29	Algebra	5.3	proof	—	open
30	Geometry	5.3	proof	—	open
31	Combinatorics	5.3	proof	—	open
32	Number theory	5.3	proof	—	open
33	Geometry	5.3	proof	—	open
34	Number theory	5.4	proof	—	open
35	Number theory	5.4	proof	—	open
36	Geometry	5.5	proof	—	open
37	Algebra	5.5	proof	—	open
38	Number theory	5.6	proof	—	open
39	Algebra	5.6	proof	—	open
40	Geometry	5.6	proof	—	open
41	Combinatorics	5.6	proof	—	open
42	Number theory	5.6	proof	—	open
43	Number theory	5.6	proof	—	open
44	Algebra	5.6	proof	—	open
45	Combinatorics	5.7	proof	—	open
46	Geometry	5.7	proof	—	open
47	Combinatorics	5.8	proof	—	open
48	Algebra	5.8	proof	—	open
49	Number theory	5.9	proof	—	open
50	Geometry	6.0	proof	—	open
51	Combinatorics	6.1	proof	—	open
52	Geometry	6.1	proof	—	open
53	Geometry	6.3	proof	—	open
54	Geometry	6.3	proof	—	open
55	Number theory	6.4	proof	—	open
56	Geometry	6.5	proof	—	open
57	Geometry	6.5	proof	—	open
58	Combinatorics	6.5	proof	—	open
59	Algebra	6.5	proof	—	open
60	Algebra	6.6	proof	—	open
61	Number theory	6.6	proof	—	open
62	Number theory	6.6	proof	—	open
63	Combinatorics	6.6	proof	—	open
64	Combinatorics	6.7	proof	—	open
65	Combinatorics	6.8	proof	—	open
66	Algebra	7.0	proof	—	open
67	Combinatorics	7.2	proof	—	open
68	Combinatorics	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.