diff --git a/HandHistories.Objects.UnitTests/Cards/BoardCardsTests.cs b/HandHistories.Objects.UnitTests/Cards/BoardCardsTests.cs
index d99cc85..e9e5659 100644
--- a/HandHistories.Objects.UnitTests/Cards/BoardCardsTests.cs
+++ b/HandHistories.Objects.UnitTests/Cards/BoardCardsTests.cs
@@ -17,6 +17,131 @@ public class BoardCardsTests
         private static Card C5 = new Card("9", "s");
         private static Card C6 = new Card("7", "s");
 
+
+        [Test]
+        public void BoardCardsTest_EqualityTest_WithDefaultComparison_CompareWithSelf_ReturnTrue()
+        {
+            BoardCards emptyBoard = BoardCards.FromCards(String.Empty);
+            BoardCards boardWithFlop = BoardCards.FromCards("AcQsTh");
+            BoardCards boardWithTurn = BoardCards.FromCards("AcQsTh2h");
+            BoardCards boardWithRiver = BoardCards.FromCards("AcQsTh2h3d");
+
+            Assert.IsTrue(emptyBoard.Equals(emptyBoard));
+            Assert.IsTrue(boardWithFlop.Equals(boardWithFlop));
+            Assert.IsTrue(boardWithTurn.Equals(boardWithTurn));
+            Assert.IsTrue(boardWithRiver.Equals(boardWithRiver));
+        }
+
+        [Test]
+        public void BoardCardsTest_EqualityTest_WithDefaultComparison_DifferentOrder_ReturnTrue()
+        {
+            BoardCards b1 = BoardCards.ForFlop(C1, C2, C3);
+            BoardCards b2 = BoardCards.ForFlop(C1, C3, C2);
+            BoardCards b3 = BoardCards.ForFlop(C2, C1, C3);
+            BoardCards b4 = BoardCards.ForFlop(C2, C3, C1);
+            BoardCards b5 = BoardCards.ForFlop(C3, C1, C2);
+            BoardCards b6 = BoardCards.ForFlop(C3, C2, C1);
+
+            Assert.IsTrue(b1.Equals(b2));
+            Assert.IsTrue(b1.Equals(b3));
+            Assert.IsTrue(b1.Equals(b4));
+            Assert.IsTrue(b1.Equals(b5));
+            Assert.IsTrue(b1.Equals(b6));
+            
+            Assert.IsTrue(b2.Equals(b3));
+            Assert.IsTrue(b2.Equals(b4));
+            Assert.IsTrue(b2.Equals(b5));
+            Assert.IsTrue(b2.Equals(b6));
+
+            Assert.IsTrue(b3.Equals(b4));
+            Assert.IsTrue(b3.Equals(b5));
+            Assert.IsTrue(b3.Equals(b6));
+
+            Assert.IsTrue(b4.Equals(b5));
+            Assert.IsTrue(b4.Equals(b6));
+
+            Assert.IsTrue(b5.Equals(b6));
+        }
+
+        [Test]
+        public void BoardCardsTest_FlopEqualityTest_WithDefaultComparision_DifferentCards_ReturnsFalse()
+        {
+            BoardCards b1 = BoardCards.ForFlop(C1, C2, C3);
+            BoardCards b2 = BoardCards.ForFlop(C1, C2, C4);
+            BoardCards b3 = BoardCards.ForFlop(C1, C3, C4);
+            BoardCards b4 = BoardCards.ForFlop(C2, C3, C4);
+
+            Assert.IsFalse(b1.Equals(b2));
+            Assert.IsFalse(b1.Equals(b3));
+            Assert.IsFalse(b1.Equals(b4));
+            Assert.IsFalse(b2.Equals(b3));
+            Assert.IsFalse(b2.Equals(b4));
+            Assert.IsFalse(b3.Equals(b4));
+        }
+
+        [Test]
+        public void BoardCardsTest_TurnEqualityTest_WithDefaultComparision_ReturnsTrue()
+        {
+            BoardCards b1 = BoardCards.ForTurn(C1, C2, C3, C4);
+            BoardCards b2 = BoardCards.ForTurn(C1, C3, C2, C4);
+            BoardCards b3 = BoardCards.ForTurn(C3, C2, C1, C4);
+
+            Assert.IsTrue(b1.Equals(b2)); 
+            Assert.IsTrue(b2.Equals(b3)); 
+            Assert.IsTrue(b1.Equals(b3));
+        }
+
+        [Test]
+        public void BoardCardsTest_TurnEqualityTest_WithDefaultComparision_DifferentCards_ReturnsFalse()
+        {
+            BoardCards b1 = BoardCards.ForTurn(C1, C2, C3, C4);
+            BoardCards b2 = BoardCards.ForTurn(C1, C2, C3, C5);
+            BoardCards b3 = BoardCards.ForTurn(C1, C2, C5, C4);
+
+            Assert.IsFalse(b1.Equals(b2));
+            Assert.IsFalse(b1.Equals(b3));
+            Assert.IsFalse(b2.Equals(b3));
+        }
+
+
+        [Test]
+        public void BoardCardsTest_TurnEqualityTest_WithDefaultComparision_SameCardsWithDifferentOrder_ReturnsTrue()
+        {
+            BoardCards b1 = BoardCards.ForTurn(C1, C2, C3, C4);
+            BoardCards b2 = BoardCards.ForTurn(C4, C2, C3, C1);
+
+            Assert.IsTrue(b1.Equals(b2));
+        }
+
+        [Test]
+        public void BoardCardsTest_RiverEqualityTest_WithDefaultComparision_DifferentCards_ReturnsFalse()
+        {
+            BoardCards b1 = BoardCards.ForRiver(C1, C2, C3, C4, C5);
+            BoardCards b2 = BoardCards.ForRiver(C1, C2, C3, C4, C6);
+            BoardCards b3 = BoardCards.ForRiver(C1, C2, C3, C6, C5);
+
+            Assert.IsFalse(b1.Equals(b2));
+            Assert.IsFalse(b1.Equals(b3));
+            Assert.IsFalse(b2.Equals(b3));
+        }
+
+        [Test]
+        public void BoardCardsTest_RiverEqualityTestWith_SameCardsWithDifferentOrder_ReturnsTrue()
+        {
+            BoardCards b1 = BoardCards.ForRiver(C1, C2, C3, C4, C5);
+            BoardCards b2 = BoardCards.ForRiver(C4, C2, C3, C1, C5);
+            BoardCards b3 = BoardCards.ForRiver(C1, C2, C3, C5, C4);
+            BoardCards b4 = BoardCards.ForRiver(C1, C2, C5, C3, C4);
+
+            Assert.IsTrue(b1.Equals(b2));
+            Assert.IsTrue(b1.Equals(b3));
+            Assert.IsTrue(b1.Equals(b4));
+            Assert.IsFalse(b2.EqualsViaHoldemOmahaRule(b3));
+            Assert.IsFalse(b2.EqualsViaHoldemOmahaRule(b4));
+            Assert.IsFalse(b3.EqualsViaHoldemOmahaRule(b4));
+        }
+
+
         [Test]
         public void BoardCardsTest_EqualityTestWithHoldemOmahaRule_CompareWithSelf_ReturnTrue()
         {
diff --git a/HandHistories.Objects/Cards/CardGroup.cs b/HandHistories.Objects/Cards/CardGroup.cs
index df8c93c..fa19a00 100644
--- a/HandHistories.Objects/Cards/CardGroup.cs
+++ b/HandHistories.Objects/Cards/CardGroup.cs
@@ -91,16 +91,10 @@ public override string ToString()
 
         public override bool Equals(object obj)
         {
-            bool stringEquality = obj.ToString().Equals(ToString());
-            if (stringEquality) return true;
-
             CardGroup cardGroup = obj as CardGroup;
-
             if (cardGroup == null) return false;
 
-            if (cardGroup.Cards.Count != Cards.Count) return false;
-
-            return (cardGroup.Cards.All(c => Cards.Contains(c)));
+            return Cards.Count == cardGroup.Cards.Count && GetBitMask() == cardGroup.GetBitMask();
         }
 
         
@@ -135,5 +129,10 @@ IEnumerator IEnumerable.GetEnumerator()
         {
             return GetEnumerator();
         }
+
+        private ulong GetBitMask() 
+        {
+            return Cards.Aggregate(0ul, (mask, card) => mask | 1ul << card.CardIntValue);
+        }
     }
 }
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