How is the difficulty level for each puzzle determined?
Charitii.com uses its custom database to keep track of how many people have gotten a puzzle right or wrong. Puzzles that people tend to get wrong will be assigned a higher difficulty level, while puzzles that most people get correct will be given an easier difficulty level. The difficulty of a puzzle adjusts itself automatically every time a player attempts a puzzle. As more people play Charitii.com, the difficulty levels will continue to become more accurate.
