Maths Olympiad Prep

Library /Bulgarian Winter Tournament

Bulgarian Winter Tournament

15 problems here, rated 4.6 to 7.8 on our scale (AIME to National Olympiad, round 2). 15 of them ask for a proof.

Algebra 4Combinatorics 4Geometry 4Number theory 3
#TopicDiffTypeYear
1 Geometry 4.6 proof — open
2 Algebra 4.6 proof — open
3 Geometry 4.7 proof — open
4 Algebra 5.0 proof — open
5 Combinatorics 5.4 proof — open
6 Algebra 5.4 proof — open
7 Number theory 5.7 proof — open
8 Number theory 5.9 proof — open
9 Geometry 5.9 proof — open
10 Geometry 6.3 proof — open
11 Number theory 6.4 proof — open
12 Combinatorics 6.5 proof — open
13 Algebra 6.6 proof — open
14 Combinatorics 6.7 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.