KöMaL problem A
136 problems here, rated 4 to 9 on our scale (AIME to IMO level). 102 of them ask for a proof. Years covered: 2009–2026.
| # | Topic | Diff | Type | Year | |
|---|---|---|---|---|---|
| 1 | Number theory | 4.0 | proof | 2014 | open |
| 2 | Number theory | 4.0 | answer | 2022 | open |
| 3 | Algebra | 5.0 | proof | 2014 | open |
| 4 | Algebra | 5.0 | proof | 2023 | open |
| 5 | Number theory | 5.0 | proof | 2016 | open |
| 6 | Number theory | 5.0 | answer | 2019 | open |
| 7 | Combinatorics | 5.0 | answer | 2017 | open |
| 8 | Number theory | 5.0 | proof | 2025 | open |
| 9 | Algebra | 5.0 | answer | 2022 | open |
| 10 | Geometry | 6.0 | proof | 2017 | open |
| 11 | Combinatorics | 6.0 | proof | 2019 | open |
| 12 | Geometry | 6.0 | proof | 2023 | open |
| 13 | Number theory | 6.0 | answer | 2018 | open |
| 14 | Combinatorics | 6.0 | proof | 2023 | open |
| 15 | Geometry | 6.0 | proof | 2017 | open |
| 16 | Number theory | 6.0 | proof | 2015 | open |
| 17 | Algebra | 6.0 | proof | 2014 | open |
| 18 | Combinatorics | 6.0 | proof | 2021 | open |
| 19 | Combinatorics | 6.0 | answer | 2025 | open |
| 20 | Combinatorics | 6.0 | proof | 2023 | open |
| 21 | Algebra | 6.0 | answer | 2017 | open |
| 22 | Geometry | 6.0 | proof | 2022 | open |
| 23 | Number theory | 6.0 | proof | 2015 | open |
| 24 | Number theory | 6.0 | proof | 2019 | open |
| 25 | Algebra | 6.0 | proof | 2014 | open |
| 26 | Geometry | 6.0 | answer | 2017 | open |
| 27 | Combinatorics | 6.0 | answer | 2017 | open |
| 28 | Number theory | 6.0 | proof | 2015 | open |
| 29 | Combinatorics | 6.0 | answer | 2024 | open |
| 30 | Algebra | 6.0 | proof | 2015 | open |
| 31 | Number theory | 6.0 | proof | 2020 | open |
| 32 | Geometry | 6.0 | proof | 2025 | open |
| 33 | Combinatorics | 6.0 | proof | 2016 | open |
| 34 | Combinatorics | 6.0 | answer | 2025 | open |
| 35 | Combinatorics | 6.0 | proof | 2020 | open |
| 36 | Combinatorics | 6.0 | answer | 2017 | open |
| 37 | Combinatorics | 6.0 | proof | 2020 | open |
| 38 | Combinatorics | 6.0 | answer | 2016 | open |
| 39 | Number theory | 6.0 | proof | 2023 | open |
| 40 | Geometry | 6.0 | proof | 2021 | open |
| 41 | Algebra | 6.0 | proof | 2015 | open |
| 42 | Combinatorics | 6.0 | proof | 2014 | open |
| 43 | Combinatorics | 6.0 | answer | 2023 | open |
| 44 | Number theory | 6.0 | answer | 2015 | open |
| 45 | Algebra | 6.0 | answer | 2017 | open |
| 46 | Number theory | 6.0 | proof | 2026 | open |
| 47 | Algebra | 6.0 | proof | 2015 | open |
| 48 | Geometry | 6.0 | proof | 2021 | open |
| 49 | Combinatorics | 6.0 | answer | 2019 | open |
| 50 | Geometry | 6.0 | proof | 2015 | open |
| 51 | Combinatorics | 6.0 | proof | 2017 | open |
| 52 | Number theory | 6.0 | proof | 2015 | open |
| 53 | Combinatorics | 6.0 | proof | 2019 | open |
| 54 | Combinatorics | 6.0 | proof | 2025 | open |
| 55 | Combinatorics | 6.0 | proof | 2026 | open |
| 56 | Algebra | 6.0 | proof | 2021 | open |
| 57 | Geometry | 7.0 | proof | 2026 | open |
| 58 | Number theory | 7.0 | answer | 2014 | open |
| 59 | Geometry | 7.0 | proof | 2018 | open |
| 60 | Algebra | 7.0 | answer | 2018 | open |
| 61 | Geometry | 7.0 | proof | 2025 | open |
| 62 | Combinatorics | 7.0 | proof | 2018 | open |
| 63 | Geometry | 7.0 | proof | 2018 | open |
| 64 | Algebra | 7.0 | proof | 2019 | open |
| 65 | Geometry | 7.0 | proof | 2015 | open |
| 66 | Algebra | 7.0 | proof | 2014 | open |
| 67 | Algebra | 7.0 | answer | 2024 | open |
| 68 | Number theory | 7.0 | proof | 2019 | open |
| 69 | Combinatorics | 7.0 | proof | 2022 | open |
| 70 | Geometry | 7.0 | proof | 2016 | open |
| 71 | Geometry | 7.0 | proof | 2019 | open |
| 72 | Geometry | 7.0 | proof | 2023 | open |
| 73 | Algebra | 7.0 | answer | 2014 | open |
| 74 | Combinatorics | 7.0 | answer | 2025 | open |
| 75 | Algebra | 7.0 | proof | 2023 | open |
| 76 | Algebra | 7.0 | answer | 2019 | open |
| 77 | Combinatorics | 7.0 | answer | 2023 | open |
| 78 | Geometry | 7.0 | proof | 2024 | open |
| 79 | Combinatorics | 7.0 | proof | 2024 | open |
| 80 | Combinatorics | 7.0 | proof | 2021 | open |
| 81 | Combinatorics | 7.0 | proof | 2023 | open |
| 82 | Combinatorics | 7.0 | proof | 2015 | open |
| 83 | Combinatorics | 7.0 | proof | 2026 | open |
| 84 | Number theory | 7.0 | answer | 2020 | open |
| 85 | Combinatorics | 7.0 | proof | 2016 | open |
| 86 | Algebra | 7.0 | answer | 2022 | open |
| 87 | Combinatorics | 7.0 | proof | 2018 | open |
| 88 | Combinatorics | 7.0 | proof | 2019 | open |
| 89 | Number theory | 7.0 | answer | 2020 | open |
| 90 | Geometry | 7.0 | proof | 2017 | open |
| 91 | Combinatorics | 7.0 | proof | 2019 | open |
| 92 | Combinatorics | 7.0 | proof | 2015 | open |
| 93 | Number theory | 7.0 | answer | 2017 | open |
| 94 | Geometry | 7.0 | proof | 2024 | open |
| 95 | Number theory | 7.0 | proof | 2017 | open |
| 96 | Combinatorics | 7.0 | proof | 2024 | open |
| 97 | Combinatorics | 7.0 | answer | 2024 | open |
| 98 | Combinatorics | 7.0 | proof | 2025 | open |
| 99 | Geometry | 7.0 | proof | 2021 | open |
| 100 | Algebra | 7.0 | proof | 2017 | open |
| 101 | Number theory | 7.0 | proof | 2025 | open |
| 102 | Number theory | 7.0 | proof | 2009 | open |
| 103 | Combinatorics | 7.0 | answer | 2022 | open |
| 104 | Algebra | 7.0 | proof | 2018 | open |
| 105 | Geometry | 7.0 | proof | 2016 | open |
| 106 | Algebra | 7.0 | answer | 2021 | open |
| 107 | Combinatorics | 7.0 | proof | 2021 | open |
| 108 | Geometry | 8.0 | proof | 2021 | open |
| 109 | Algebra | 8.0 | proof | 2017 | open |
| 110 | Geometry | 8.0 | proof | 2024 | open |
| 111 | Algebra | 8.0 | proof | 2017 | open |
| 112 | Algebra | 8.0 | proof | 2026 | open |
| 113 | Geometry | 8.0 | proof | 2020 | open |
| 114 | Geometry | 8.0 | proof | 2024 | open |
| 115 | Combinatorics | 8.0 | proof | 2020 | open |
| 116 | Geometry | 8.0 | answer | 2017 | open |
| 117 | Geometry | 8.0 | proof | 2018 | open |
| 118 | Combinatorics | 8.0 | answer | 2020 | open |
| 119 | Geometry | 8.0 | proof | 2023 | open |
| 120 | Geometry | 8.0 | proof | 2018 | open |
| 121 | Geometry | 8.0 | proof | 2018 | open |
| 122 | Geometry | 8.0 | proof | 2026 | open |
| 123 | Geometry | 8.0 | proof | 2015 | open |
| 124 | Geometry | 8.0 | proof | 2023 | open |
| 125 | Geometry | 8.0 | proof | 2019 | open |
| 126 | Geometry | 8.0 | proof | 2020 | open |
| 127 | Geometry | 9.0 | proof | 2019 | open |
| 128 | Geometry | 9.0 | answer | 2024 | open |
| 129 | Geometry | 9.0 | proof | 2024 | open |
| 130 | Geometry | 9.0 | proof | 2017 | open |
| 131 | Geometry | 9.0 | proof | 2023 | open |
| 132 | Geometry | 9.0 | proof | 2025 | open |
| 133 | Geometry | 9.0 | proof | 2019 | open |
| 134 | Geometry | 9.0 | proof | 2025 | open |
| 135 | Geometry | 9.0 | proof | 2024 | open |
| 136 | Combinatorics | 9.0 | proof | 2022 | 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.