Famous Thinkers: Galilei and Ford: Crack the medium-level codes and explore their lives

Famous Thinkers: Einstein and Carver: Crack the easy-level codes and explore their lives

Famous Thinkers: Earhart, King, and Curie: Crack the difficult-level codes and explore their lives

Famous Thinkers: Da Vinci and Mendel: Crack the easy-level codes and explore their lives

The Einstein Code

The Einstein Code