Voting rules: Choose the cases solved you think is the most difficult!
This is a community-based ranking of the most difficult cases solved. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or Case solved is missing, feel free to help improve the ranking!
A participant may cast an up or down vote for each Case solved once every 24 hours. The rank of each Case solved is then calculated from the weighted sum of all up and down votes.