Baltic Way Shortlist
88 problems here, rated 7.1 to 9.2 on our scale (National Olympiad, round 2 to IMO level). 88 of them ask for a proof. Years covered: 2021–2023.
| # | Topic | Diff | Type | Year | |
|---|---|---|---|---|---|
| 1 | Number theory | 7.1 | proof | 2023 | open |
| 2 | Algebra | 7.5 | proof | — | open |
| 3 | Number theory | 7.5 | proof | — | open |
| 4 | Algebra | 7.6 | proof | 2023 | open |
| 5 | Combinatorics | 7.6 | proof | 2023 | open |
| 6 | Geometry | 7.6 | proof | 2021 | open |
| 7 | Combinatorics | 7.6 | proof | 2021 | open |
| 8 | Algebra | 7.7 | proof | 2023 | open |
| 9 | Number theory | 7.7 | proof | 2023 | open |
| 10 | Combinatorics | 7.7 | proof | 2023 | open |
| 11 | Combinatorics | 7.7 | proof | 2021 | open |
| 12 | Geometry | 7.7 | proof | 2021 | open |
| 13 | Geometry | 7.8 | proof | 2021 | open |
| 14 | Geometry | 7.8 | proof | 2021 | open |
| 15 | Number theory | 7.8 | proof | — | open |
| 16 | Combinatorics | 7.9 | proof | 2021 | open |
| 17 | Algebra | 7.9 | proof | 2021 | open |
| 18 | Combinatorics | 7.9 | proof | — | open |
| 19 | Algebra | 7.9 | proof | 2021 | open |
| 20 | Algebra | 7.9 | proof | 2023 | open |
| 21 | Geometry | 7.9 | proof | — | open |
| 22 | Geometry | 8.0 | proof | 2023 | open |
| 23 | Geometry | 8.0 | proof | — | open |
| 24 | Algebra | 8.0 | proof | 2021 | open |
| 25 | Combinatorics | 8.0 | proof | — | open |
| 26 | Algebra | 8.0 | proof | 2023 | open |
| 27 | Algebra | 8.0 | proof | 2023 | open |
| 28 | Number theory | 8.1 | proof | — | open |
| 29 | Geometry | 8.1 | proof | — | open |
| 30 | Number theory | 8.1 | proof | — | open |
| 31 | Combinatorics | 8.1 | proof | — | open |
| 32 | Algebra | 8.1 | proof | — | open |
| 33 | Algebra | 8.1 | proof | 2023 | open |
| 34 | Algebra | 8.1 | proof | 2021 | open |
| 35 | Number theory | 8.1 | proof | — | open |
| 36 | Geometry | 8.2 | proof | 2023 | open |
| 37 | Geometry | 8.2 | proof | 2023 | open |
| 38 | Geometry | 8.2 | proof | 2023 | open |
| 39 | Number theory | 8.2 | proof | — | open |
| 40 | Geometry | 8.2 | proof | 2021 | open |
| 41 | Geometry | 8.2 | proof | 2021 | open |
| 42 | Combinatorics | 8.2 | proof | 2023 | open |
| 43 | Number theory | 8.3 | proof | 2021 | open |
| 44 | Algebra | 8.3 | proof | — | open |
| 45 | Geometry | 8.4 | proof | 2021 | open |
| 46 | Combinatorics | 8.4 | proof | — | open |
| 47 | Geometry | 8.4 | proof | 2021 | open |
| 48 | Geometry | 8.4 | proof | 2023 | open |
| 49 | Geometry | 8.4 | proof | 2021 | open |
| 50 | Geometry | 8.4 | proof | 2021 | open |
| 51 | Algebra | 8.4 | proof | — | open |
| 52 | Geometry | 8.4 | proof | — | open |
| 53 | Combinatorics | 8.4 | proof | — | open |
| 54 | Geometry | 8.5 | proof | — | open |
| 55 | Geometry | 8.5 | proof | 2021 | open |
| 56 | Geometry | 8.5 | proof | — | open |
| 57 | Geometry | 8.5 | proof | 2023 | open |
| 58 | Number theory | 8.5 | proof | 2023 | open |
| 59 | Number theory | 8.5 | proof | 2023 | open |
| 60 | Geometry | 8.5 | proof | — | open |
| 61 | Combinatorics | 8.5 | proof | 2021 | open |
| 62 | Combinatorics | 8.6 | proof | 2023 | open |
| 63 | Geometry | 8.6 | proof | 2021 | open |
| 64 | Algebra | 8.6 | proof | 2021 | open |
| 65 | Combinatorics | 8.6 | proof | 2023 | open |
| 66 | Geometry | 8.6 | proof | 2023 | open |
| 67 | Algebra | 8.6 | proof | 2023 | open |
| 68 | Algebra | 8.6 | proof | 2021 | open |
| 69 | Algebra | 8.6 | proof | 2023 | open |
| 70 | Geometry | 8.6 | proof | — | open |
| 71 | Geometry | 8.6 | proof | 2023 | open |
| 72 | Geometry | 8.6 | proof | 2023 | open |
| 73 | Combinatorics | 8.7 | proof | 2023 | open |
| 74 | Geometry | 8.7 | proof | 2023 | open |
| 75 | Algebra | 8.8 | proof | — | open |
| 76 | Geometry | 8.8 | proof | 2023 | open |
| 77 | Algebra | 8.8 | proof | 2023 | open |
| 78 | Algebra | 8.8 | proof | 2023 | open |
| 79 | Number theory | 8.8 | proof | 2023 | open |
| 80 | Combinatorics | 8.8 | proof | 2023 | open |
| 81 | Geometry | 8.9 | proof | 2023 | open |
| 82 | Number theory | 8.9 | proof | 2023 | open |
| 83 | Algebra | 8.9 | proof | — | open |
| 84 | Combinatorics | 8.9 | proof | — | open |
| 85 | Combinatorics | 9.0 | proof | 2023 | open |
| 86 | Geometry | 9.0 | proof | 2023 | open |
| 87 | Combinatorics | 9.1 | proof | — | open |
| 88 | Combinatorics | 9.2 | proof | 2023 | 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.