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Here we're keeping all of past year's problems and solutions, as well as contest results. Some years might be missing a round since we haven't done every round every year. In each year, the more difficult division is listed second.
Year
Division
Algebra
Geometry
Counting
Number Theory
Sprint
Team
Fun
Guts
2020
Online





Problems
Solutions


2019
Descartes
Problems
Solutions
Problems
Solutions
Problems
Solutions
Problems
Solutions

Problems
Solutions
Introduction
Problems
Problems
Solutions
Leibniz
Problems
Solutions
Problems
Solutions
Problems
Solutions
Problems
Solutions

Problems
Solutions
Problems
Solutions
2018
Cantor
Problems
Solutions
Problems
Solutions
Problems
Solutions
Problems
Solutions

Problems
Solutions

Problems
Solutions
Gauss
Problems
Solutions
Problems
Solutions
Problems
Solutions
Problems
Solutions

Problems
Solutions
Problems
Solutions
2017
Ramanujan
Problems
Solutions
Problems
Solutions
Problems
Solutions
Problems
Solutions

Problems
Solutions

Problems
Solutions
Pascal
Problems
Solutions
Problems
Solutions
Problems
Solutions
Problems
Solutions

Problems
Solutions
Problems
Solutions
2016
Euclid
Problems
Answers
Problems
Answers
Problems
Answers
Problems
Answers
Problems
Answers
Problems
Answers

Problems
Answers
Lobachevsky
Problems
Answers
Problems
Answers
Problems
Answers
Problems
Answers
Problems
Answers
Problems
Answers
2015
Fermat
Problems
Problems
Problems
Problems
Problems
Problems

Problems
Euler
Problems
Problems
Problems
Problems
Problems
Problems