diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..591f8b0
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,11 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+    
+        
+        null
+    ]
+}
\ No newline at end of file
diff --git a/lib/adagrams.rb b/lib/adagrams.rb
index e69de29..97b8aa4 100644
--- a/lib/adagrams.rb
+++ b/lib/adagrams.rb
@@ -0,0 +1,104 @@
+require 'csv'
+require 'awesome_print'
+
+def draw_letters
+	letter_pool = []
+	letter_choices = Hash( A: 9, B: 2, C: 2, D:4, E: 12, F: 2, G: 3, H: 2, I: 9, J: 1, K: 1, L: 4, M: 2,
+												 N: 6, O: 8, P: 2, Q: 1, R: 6, S: 4, T: 6, U: 4, V: 2, W: 2, X: 1, Y: 2, Z: 1)
+												 
+	letter_choices.map do |letter, number|
+		letter_pool << (letter.to_s * number).split(//)
+	end
+	letter_pool = letter_pool.flatten
+	user_hand = letter_pool.sample(10)
+
+	return user_hand
+end
+
+def uses_available_letters?(input, letters_in_hand)
+	split_input = input.upcase.split(//)
+
+	letters_in_hand.each do |letter|
+		split_input.delete_at(split_input.index(letter)) unless split_input.index(letter).nil?
+	end
+
+	return split_input.empty?
+end
+
+def score_word(word)
+	score_count = 0
+	split_input = word.upcase.split(//)
+
+	split_input.each do |letter|
+		case letter
+		when "A", "E", "I", "O", "U", "L", "N", "R", "S", "T"
+			score_count += 1
+		when "D", "G"
+			score_count += 2
+		when "B", "C", "M", "P"
+			score_count += 3
+		when "F", "H", "V", "W", "Y"
+				score_count += 4
+		when "K"
+			score_count += 5
+		when "J", "X"
+			score_count += 8
+		when "Q", "Z"
+			score_count += 10
+		end
+	end
+
+	score_count += 8 if word.length > 6
+	return score_count
+end
+
+def highest_score_from(words)
+	word_score_hash = Hash.new
+	highest_score = 0
+	winning_word = ""
+	shortest_word_length = 0
+
+	words.each do |word|
+		score = score_word(word)
+		word_score_hash[word] = score
+	end
+	
+	highest_score = word_score_hash.values.max
+
+	tie = word_score_hash.select { |k, v| v == highest_score}
+	if tie.length > 1
+		tie.each do |word, score|
+			if word.length > shortest_word_length 
+				if shortest_word_length == 0
+					shortest_word_length = word.length
+					winning_word = word
+				elsif word.length == 10
+					shortest_word_length = word.length
+					winning_word = word
+				end
+
+			elsif word.length < shortest_word_length
+				if shortest_word_length == 10
+					nil
+				else
+					winning_word = word
+				end
+
+			elsif word.length == shortest_word_length 
+				winning_word = word_score_hash.key(highest_score)
+			end
+		end
+	else 
+		winning_word = word_score_hash.key(highest_score)
+	end
+	return winning_hash = {:word => winning_word, :score => highest_score}
+end
+
+def is_in_english_dict?(input)
+	dictionary = CSV.read('assets/dictionary-english.csv')
+	dictionary = dictionary.flatten
+	raise ArgumentError if input == ""
+	raise ArgumentError if input.nil?
+	raise ArgumentError if input.class != String
+	return dictionary.include?(input)	
+end
\ No newline at end of file
diff --git a/test/adagrams_test.rb b/test/adagrams_test.rb
index 90ec44d..9fb26e2 100644
--- a/test/adagrams_test.rb
+++ b/test/adagrams_test.rb
@@ -178,4 +178,31 @@
       expect(best_word[:score]).must_equal 18
     end
   end
+
+  describe 'is_in_english_dict?' do
+    it 'checks if input word is in english dictionary' do
+      input = 'hello'
+      expect(is_in_english_dict?(input)).must_equal true
+    end
+    
+    it 'checks if input is not in the english dictionary' do
+      input = 'asdf'
+      expect(is_in_english_dict?(input)).must_equal false
+    end
+
+    it 'calls ArgumentError on empty string' do
+      input = ""
+      expect{is_in_english_dict?(input)}.must_raise ArgumentError
+    end
+
+    it 'calls ArgumentError if input is nil' do
+      input = nil
+      expect{is_in_english_dict?(input)}.must_raise ArgumentError
+    end
+
+    it "calls ArgumentError on non string inputs" do
+      input = 234
+      expect{is_in_english_dict?(input)}.must_raise ArgumentError
+    end
+  end
 end