Einstein 9: Iterating

iterate.rb

[:white, :yellow, :blue, :red, :green].permutation.each do |colors|
  [:german, :swedish, :british, :norwegian, :danish,].permutation.each do |nationalities|
    [:birds, :cats, :horses, :fish, :dogs].permutation.each do |pets|       
      [:beer, :water, :tea, :milk, :coffee].permutation.each do |drinks|
        [:blends, :pall_mall, :prince, :bluemasters, :dunhill].permutation.each do |cigars|
          next unless nationalities[0] == :norwegian
          next unless drinks[2] == :milk

          next unless implies?(nationalities, :british, colors, :red)
          next unless implies?(nationalities, :swedish, pets, :dogs) 
          next unless implies?(cigars, :pall_mall, pets, :birds)
          next unless implies?(nationalities , :german, cigars, :prince)
          next unless implies?(colors, :yellow, cigars, :dunhill)
          next unless implies?(cigars, :bluemasters,  drinks, :beer)
          next unless implies?(colors, :green, drinks, :coffee)
          next unless implies?(nationalities, :danish, drinks, :tea)

          next unless left_of?(colors, :green, colors, :white)

          next unless next_to?(nationalities, :norwegian, colors, :blue)
          next unless next_to?(pets, :horses, cigars, :dunhill)
          next unless next_to?(cigars, :blends, drinks, :water)
          next unless next_to?(cigars, :blends, pets, :cats)
          puts [colors, nationalities, pets, drinks, cigars].inspect
        end
      end
    end
  end
end