exercise_1.rb => 04/04/2016 => Homes exercise_2.rb => 05/04/2016 => IronBlog exercise_3.rb => 06/04/2016 => DoorsGame exercise_4.rb => 07/04/2016 => ShoppingCart final_exercise_chess_validator.rb => 08/04/2016 => ChessValidator exercise_extra_6_degrees.rb => 08/04/2016 => 6DegreesConnections