diff --git a/lib/adagrams.rb b/lib/adagrams.rb
index e69de29..912c75f 100644
--- a/lib/adagrams.rb
+++ b/lib/adagrams.rb
@@ -0,0 +1,103 @@
+# Wave 1 - creates letter hand
+def draw_letters 
+  rand_letters = []
+  letters = ["a", "a", "a", "a", "a", "a", "a", "a", "a", "b", "b", "c", "c", "d", "d", "d", "d", "e", "e", "e", "e", "e", "e", "e", "e", "e", "e", "e", "e", "f", "f", "g", "g", "g", "h", "h", "i", "i", "i", "i", "i", "i", "i", "i", "i", "j", "k", "l", "l", "l", "l", "m", "m", "n", "n", "n","n", "n", "n", "o", "o", "o", "o", "o", "o", "o", "o", "p", "p", "q", "r", "r", "r", "r", "r", "r", "s", "s", "s", "s", "t", "t", "t", "t", "t", "t", "u", "u", "u", "u", "v", "v", "w", "w", "x", "y", "y", "z"]
+  rand_letters = letters.sample(10)
+  return rand_letters
+end
+
+# Wave 2 - checks that input is valid
+def uses_available_letters?(input, letters_in_hand)
+  letters_in_hand_copy = letters_in_hand.dup
+  input.split('').each do |letter|
+    if letters_in_hand_copy.include? (letter)
+      letters_in_hand_copy.slice!(letters_in_hand_copy.index(letter))
+    else 
+      return false
+    end
+  end 
+  return true 
+end
+
+# Wave 3 - scores input
+def score_word(word)
+  score = 0
+  if word.length > 6
+    score += 8
+  end
+  word = word.upcase.split('')
+  
+  word.each do |letter|
+    
+    case letter
+    when "A", "E", "I", "O", "U", "L", "N", "R", "S", "T"
+      score += 1
+    when "D", "G"
+      score += 2
+    when "B", "C", "M", "P"
+      score += 3
+    when "F", "H", "V", "W", "Y"
+      score += 4
+    when "K"
+      score += 5
+    when "J", "X"
+      score += 8
+    when "Q", "Z"
+      score += 10
+    end
+  end
+  
+  return score
+end
+
+# Wave 4 - method for storing all user input
+def word_scores(words)
+  score_storage_hash = {}
+  words.each do |word|
+    score_storage_hash[word] = score_word(word)   
+  end
+  return score_storage_hash
+end
+
+# Wave 4 - method for breaking ties
+def tie_breaker(words)
+  ten_letter_word_array = []
+  tie_scores_array = []
+  winning_hash = {}
+  
+  word_scores(words).each do |word, score|
+    if word.length == 10
+      ten_letter_word_array << word
+    else
+      tie_scores_array << word
+    end
+    
+    if ten_letter_word_array.count > 0
+      winning_hash[:word] = ten_letter_word_array[0]
+      winning_hash[:score] = score
+    else 
+      winning_hash[:word] = tie_scores_array.min_by { |word| word.length }
+      winning_hash[:score] = score
+    end
+  end
+  
+  return winning_hash
+end
+
+# Wave 4 - determines highest score, and if needed invokes tie_breaker
+def highest_score_from(words)
+  high_score_hash = {}
+  
+  high_score = word_scores(words).max_by { |word, score| score }[1]
+  winning_word = word_scores(words).max_by { |word, score| score }[0]
+
+  if word_scores(words).values != word_scores(words).values.uniq
+    tie_winner = tie_breaker(words) 
+    winning_word = tie_winner[:word]
+    high_score = tie_winner[:score]
+  end
+    
+  high_score_hash[:score] = high_score
+  high_score_hash[:word] = winning_word 
+  return high_score_hash
+end
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