Maths Olympiad Prep

Library /IMO Shortlist

IMO Shortlist

144 problems here, rated 6.8 to 9.1 on our scale (National olympiad to IMO level).

Algebra 64Combinatorics 37Geometry 13Number theory 30
#TopicDiffTypeYear
1 Algebra 6.8 answer — open
2 Number theory 7.1 answer — open
3 Algebra 7.2 answer — open
4 Combinatorics 7.3 answer — open
5 Combinatorics 7.4 answer — open
6 Number theory 7.5 answer — open
7 Algebra 7.5 answer — open
8 Combinatorics 7.5 answer — open
9 Number theory 7.5 answer — open
10 Algebra 7.5 answer — open
11 Algebra 7.5 answer — open
12 Number theory 7.6 answer — open
13 Combinatorics 7.6 answer — open
14 Number theory 7.6 answer — open
15 Algebra 7.6 answer — open
16 Number theory 7.6 answer — open
17 Combinatorics 7.6 answer — open
18 Algebra 7.7 answer — open
19 Geometry 7.7 answer — open
20 Number theory 7.7 answer — open
21 Algebra 7.7 answer — open
22 Combinatorics 7.7 answer — open
23 Combinatorics 7.7 answer — open
24 Number theory 7.8 answer — open
25 Combinatorics 7.8 answer — open
26 Geometry 7.8 answer — open
27 Geometry 7.8 answer — open
28 Algebra 7.8 answer — open
29 Number theory 7.8 answer — open
30 Algebra 7.8 answer — open
31 Algebra 7.8 answer — open
32 Algebra 7.8 answer — open
33 Geometry 7.9 answer — open
34 Algebra 7.9 answer — open
35 Algebra 7.9 answer — open
36 Algebra 7.9 answer — open
37 Algebra 7.9 answer — open
38 Algebra 7.9 answer — open
39 Algebra 7.9 answer — open
40 Number theory 7.9 answer — open
41 Algebra 7.9 answer — open
42 Combinatorics 7.9 answer — open
43 Algebra 8.0 answer — open
44 Algebra 8.0 answer — open
45 Algebra 8.0 answer — open
46 Algebra 8.0 answer — open
47 Algebra 8.0 answer — open
48 Number theory 8.0 answer — open
49 Combinatorics 8.0 answer — open
50 Algebra 8.0 answer — open
51 Algebra 8.0 answer — open
52 Algebra 8.1 answer — open
53 Geometry 8.1 answer — open
54 Geometry 8.1 answer — open
55 Combinatorics 8.1 answer — open
56 Algebra 8.1 answer — open
57 Algebra 8.1 answer — open
58 Algebra 8.1 answer — open
59 Number theory 8.1 answer — open
60 Number theory 8.1 answer — open
61 Number theory 8.2 answer — open
62 Number theory 8.2 answer — open
63 Algebra 8.2 answer — open
64 Number theory 8.2 answer — open
65 Number theory 8.2 answer — open
66 Number theory 8.2 answer — open
67 Combinatorics 8.2 answer — open
68 Algebra 8.2 answer — open
69 Algebra 8.2 answer — open
70 Algebra 8.2 answer — open
71 Number theory 8.2 answer — open
72 Geometry 8.2 answer — open
73 Algebra 8.2 answer — open
74 Algebra 8.2 answer — open
75 Combinatorics 8.2 answer — open
76 Number theory 8.3 answer — open
77 Combinatorics 8.3 answer — open
78 Combinatorics 8.3 answer — open
79 Number theory 8.3 answer — open
80 Number theory 8.3 answer — open
81 Algebra 8.3 answer — open
82 Algebra 8.3 answer — open
83 Algebra 8.3 answer — open
84 Algebra 8.3 answer — open
85 Combinatorics 8.4 answer — open
86 Algebra 8.4 answer — open
87 Combinatorics 8.4 answer — open
88 Algebra 8.4 answer — open
89 Combinatorics 8.4 answer — open
90 Algebra 8.4 answer — open
91 Number theory 8.4 answer — open
92 Number theory 8.4 answer — open
93 Algebra 8.4 answer — open
94 Combinatorics 8.4 answer — open
95 Algebra 8.4 answer — open
96 Algebra 8.5 answer — open
97 Combinatorics 8.5 answer — open
98 Algebra 8.5 answer — open
99 Geometry 8.5 answer — open
100 Number theory 8.5 answer — open
101 Combinatorics 8.5 answer — open
102 Algebra 8.5 answer — open
103 Algebra 8.5 answer — open
104 Algebra 8.5 answer — open
105 Combinatorics 8.5 answer — open
106 Geometry 8.5 answer — open
107 Geometry 8.5 answer — open
108 Combinatorics 8.6 answer — open
109 Combinatorics 8.6 answer — open
110 Algebra 8.6 answer — open
111 Algebra 8.6 answer — open
112 Algebra 8.6 answer — open
113 Number theory 8.6 answer — open
114 Combinatorics 8.6 answer — open
115 Algebra 8.7 answer — open
116 Algebra 8.7 answer — open
117 Geometry 8.7 answer — open
118 Algebra 8.7 answer — open
119 Combinatorics 8.7 answer — open
120 Algebra 8.7 answer — open
121 Algebra 8.7 answer — open
122 Number theory 8.7 answer — open
123 Algebra 8.7 answer — open
124 Algebra 8.7 answer — open
125 Combinatorics 8.8 answer — open
126 Combinatorics 8.8 answer — open
127 Combinatorics 8.8 answer — open
128 Combinatorics 8.8 answer — open
129 Geometry 8.8 answer — open
130 Algebra 8.8 answer — open
131 Algebra 8.8 answer — open
132 Number theory 8.8 answer — open
133 Number theory 8.8 answer — open
134 Number theory 8.8 answer — open
135 Combinatorics 8.9 answer — open
136 Geometry 8.9 answer — open
137 Combinatorics 8.9 answer — open
138 Combinatorics 8.9 answer — open
139 Algebra 8.9 answer — open
140 Combinatorics 8.9 answer — open
141 Algebra 9.1 answer — open
142 Combinatorics 9.1 answer — open
143 Combinatorics 9.1 answer — open
144 Combinatorics 9.1 answer — 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.