diff --git a/lib/14_find_number.rb b/lib/14_find_number.rb
index 5da0075..eafd7f0 100644
--- a/lib/14_find_number.rb
+++ b/lib/14_find_number.rb
@@ -17,6 +17,10 @@ def make_guess
   end
 
   def game_over?
-    @guess == @answer
+    guess == answer
+  end
+
+  def update_range
+    guess < answer ? @min = guess + 1 : @max = guess - 1
   end
 end
diff --git a/spec/14_find_number_spec.rb b/spec/14_find_number_spec.rb
index 1543672..488d076 100644
--- a/spec/14_find_number_spec.rb
+++ b/spec/14_find_number_spec.rb
@@ -220,20 +220,36 @@
     context 'when the guess is less than the answer' do
       subject(:low_guess_game) { described_class.new(0, 9, number_range, 4) }
 
-      xit 'updates min to 5' do
+      before do
+        low_guess_game.update_range
       end
 
-      xit 'does not update max' do
+      it 'updates min to 5' do
+        min_after_guess = low_guess_game.min
+        expect(min_after_guess).to eq(5)
+      end
+
+      it 'does not update max' do
+        max_after_guess = low_guess_game.max
+        expect(max_after_guess).to eq(9)
       end
     end
 
     context 'when the guess is more than the answer' do
       subject(:high_guess_game) { described_class.new(0, 9, number_range, 9) }
 
-      xit 'does not update min' do
+      before do
+        high_guess_game.update_range
+      end
+
+      it 'does not update min' do
+        min_after_guess = high_guess_game.min
+        expect(min_after_guess).to eq(0)
       end
 
-      xit 'updates max to 8' do
+      it 'updates max to 8' do
+        max_after_guess = high_guess_game.max
+        expect(max_after_guess).to eq(8)
       end
     end
 
@@ -249,10 +265,20 @@
     # Write a test for any 'edge cases' that you can think of, for example:
 
     context 'when the guess is 7, min=5, and max=8' do
-      xit 'updates min to the same value as max' do
+      subject(:high_guess_game) { described_class.new(5, 8, number_range, 7) }
+
+      before do
+        high_guess_game.update_range
+      end
+
+      it 'updates min to the same value as max' do
+        min_after_guess = high_guess_game.max
+        expect(min_after_guess).to eq(8)
       end
 
-      xit 'does not update max' do
+      it 'does not update max' do
+        max_after_guess = high_guess_game.max
+        expect(max_after_guess).to eq(8)
       end
     end
   end