Library /Baltic Way competition problems

Baltic Way competition problems

45 problems here, rated 4.3 to 7.7 on our scale (AIME to National Olympiad, round 2). 45 of them ask for a proof. Years covered: 1992–2020.

Algebra 8Combinatorics 18Geometry 11Number theory 8

#	Topic	Diff	Type	Year
1	Algebra	4.3	proof	—	open
2	Algebra	4.3	proof	2016	open
3	Geometry	4.4	proof	—	open
4	Geometry	4.4	proof	—	open
5	Algebra	4.4	proof	—	open
6	Number theory	4.5	proof	—	open
7	Geometry	4.5	proof	—	open
8	Combinatorics	4.5	proof	1997	open
9	Algebra	4.5	proof	1992	open
10	Geometry	4.7	proof	—	open
11	Algebra	4.8	proof	1992	open
12	Geometry	4.9	proof	2005	open
13	Number theory	4.9	proof	2016	open
14	Number theory	5.1	proof	—	open
15	Algebra	5.1	proof	—	open
16	Combinatorics	5.1	proof	—	open
17	Combinatorics	5.2	proof	—	open
18	Geometry	5.5	proof	1993	open
19	Number theory	5.6	proof	2016	open
20	Geometry	5.7	proof	2013	open
21	Combinatorics	5.7	proof	—	open
22	Geometry	5.8	proof	—	open
23	Number theory	5.8	proof	2016	open
24	Number theory	5.8	proof	—	open
25	Combinatorics	5.9	proof	—	open
26	Number theory	6.0	proof	—	open
27	Combinatorics	6.0	proof	—	open
28	Algebra	6.1	proof	2019	open
29	Combinatorics	6.1	proof	—	open
30	Geometry	6.1	proof	2005	open
31	Combinatorics	6.1	proof	2013	open
32	Algebra	6.3	proof	2013	open
33	Combinatorics	6.5	proof	2019	open
34	Combinatorics	6.5	proof	1998	open
35	Combinatorics	6.6	proof	—	open
36	Combinatorics	6.8	proof	2019	open
37	Combinatorics	6.9	proof	2019	open
38	Combinatorics	7.5	proof	2020	open
39	Combinatorics	7.5	proof	2013	open
40	Combinatorics	7.6	proof	1997	open
41	Geometry	7.6	proof	2020	open
42	Combinatorics	7.6	proof	2016	open
43	Combinatorics	7.6	proof	—	open
44	Geometry	7.7	proof	—	open
45	Number theory	7.7	proof	2013	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.