Done

lib/game_status.rb

@@ -2,5 +2,50 @@
 def position_taken?(board, index)
   !(board[index].nil? || board[index] == " ")
 end
+WIN_COMBINATIONS = [
+  [0,1,2],  #top row
+  [3,4,5],  #middle row
+  [6,7,8],  #bottom row
+  [0,3,6],  #top left straight down to bottm left
+  [1,4,7],  #top middle straight down to bottom middle
+  [2,5,8],  #top right straigh down to bottom right
+  [0,4,8],  #diagonal top left to bottom right
+  [2,4,6]  #diagonal top right to bottom left
+]
 
-# Define your WIN_COMBINATIONS constant
+def won?(board)
+
+  WIN_COMBINATIONS.detect do |win|
+    if board[win[0]] == "X" && board[win[1]] == "X" && board[win[2]] == "X"
+      return win
+  elsif
+    board[win[0]]== "O" && board[win[1]] == "O" && board[win[2]] == "O"
+      return win
+    end
+  end
+  false
+end
+
+def full?(board)
+  board.each do |spot|
+    if spot == " "
+      return false
+    end
+  end
+end
+
+def draw?(board)
+  full?(board) && !won?(board)
+end
+
+def over?(board)
+  won?(board) || draw?(board)
+end
+
+def winner(board)
+  if won?(board)
+    board[won?(board)[0]]
+  else
+    return nil
+  end
+end# Define your WIN_COMBINATIONS constant