diff --git a/Chapter 9_1.py b/Chapter 9_1.py
new file mode 100644
index 0000000..260f6ae
--- /dev/null
+++ b/Chapter 9_1.py	
@@ -0,0 +1,206 @@
+#Chapter 9_1
+#By: Karlos Calvillo
+#3/5/15
+#in collaboration with Tom Morrissey and Karl Pearson
+
+# Blackjack
+# From 1 to 7 players compete against a dealer
+
+import cards, games     
+
+class BJ_Card(cards.Card):
+    """ A Blackjack Card. """
+    ACE_VALUE = 1
+
+    @property
+    def value(self):
+        if self.is_face_up:
+            v = BJ_Card.RANKS.index(self.rank) + 1
+            if v > 10:
+                v = 10
+        else:
+            v = None
+        return v
+
+class BJ_Deck(cards.Deck):
+    """ A Blackjack Deck. """
+    def populate(self):
+        for suit in BJ_Card.SUITS: 
+            for rank in BJ_Card.RANKS: 
+                self.cards.append(BJ_Card(rank, suit))
+    
+
+class BJ_Hand(cards.Hand):
+    """ A Blackjack Hand. """
+    def __init__(self, name):
+        super(BJ_Hand, self).__init__()
+        self.name = name
+
+    def __str__(self):
+        rep = self.name + ":\t" + super(BJ_Hand, self).__str__()  
+        if self.total:
+            rep += "(" + str(self.total) + ")"        
+        return rep
+
+    @property     
+    def total(self):
+        # if a card in the hand has value of None, then total is None
+        for card in self.cards:
+            if not card.value:
+                return None
+        
+        # add up card values, treat each Ace as 1
+        t = 0
+        for card in self.cards:
+              t += card.value
+
+        # determine if hand contains an Ace
+        contains_ace = False
+        for card in self.cards:
+            if card.value == BJ_Card.ACE_VALUE:
+                contains_ace = True
+                
+        # if hand contains Ace and total is low enough, treat Ace as 11
+        if contains_ace and t <= 11:
+            # add only 10 since we've already added 1 for the Ace
+            t += 10   
+                
+        return t
+
+    def is_busted(self):
+        return self.total > 21
+
+
+class BJ_Player(BJ_Hand):
+    """ A Blackjack Player. """
+    def is_hitting(self):
+        response = games.ask_yes_no("\n" + self.name + ", do you want a hit? (Y/N): ")
+        return response == "y"
+
+    def bust(self):
+        print(self.name, "busts.")
+        self.lose()
+
+    def lose(self):
+        print(self.name, "loses.")
+
+    def win(self):
+        print(self.name, "wins.")
+
+    def push(self):
+        print(self.name, "pushes.")
+
+        
+class BJ_Dealer(BJ_Hand):
+    """ A Blackjack Dealer. """
+    def is_hitting(self):
+        return self.total < 17
+
+    def bust(self):
+        print(self.name, "busts.")
+
+    def flip_first_card(self):
+        first_card = self.cards[0]
+        first_card.flip()
+
+
+class BJ_Game(object):
+    """ A Blackjack Game. """
+    def __init__(self, names):      
+        self.players = []
+        for name in names:
+            player = BJ_Player(name)
+            self.players.append(player)
+
+        self.dealer = BJ_Dealer("Dealer")
+
+        self.deck = BJ_Deck()
+        self.deck.populate()
+        self.deck.shuffle()
+
+    @property
+    def still_playing(self):
+        sp = []
+        for player in self.players:
+            if not player.is_busted():
+                sp.append(player)
+        return sp
+
+    def __additional_cards(self, player):
+        while not player.is_busted() and player.is_hitting():
+            if self.deck == 0:
+                self.deck = BJ_Deck()
+                self.deck.populate()
+                self.deck.shuffle()
+                
+            self.deck.deal([player])
+            print(player)
+            if player.is_busted():
+                player.bust()
+           
+    def play(self):
+        # deal initial 2 cards to everyone
+        self.deck.deal(self.players + [self.dealer], per_hand = 2)
+        self.dealer.flip_first_card()    # hide dealer's first card
+        for player in self.players:
+            print(player)
+        print(self.dealer)
+
+        # deal additional cards to players
+        for player in self.players:
+            self.__additional_cards(player)
+
+        self.dealer.flip_first_card()    # reveal dealer's first 
+
+        if not self.still_playing:
+            # since all players have busted, just show the dealer's hand
+            print(self.dealer)
+        else:
+            # deal additional cards to dealer
+            print(self.dealer)
+            self.__additional_cards(self.dealer)
+
+            if self.dealer.is_busted():
+                # everyone still playing wins
+                for player in self.still_playing:
+                    player.win()                    
+            else:
+                # compare each player still playing to dealer
+                for player in self.still_playing:
+                    if player.total > self.dealer.total:
+                        player.win()
+                    elif player.total < self.dealer.total:
+                        player.lose()
+                    else:
+                        player.push()
+
+        # remove everyone's cards
+        for player in self.players:
+            player.clear()
+        self.dealer.clear()
+        
+
+def main():
+    print("\t\tWelcome to Blackjack!\n")
+    
+    names = []
+    number = games.ask_number("How many players? (1 - 7): ", low = 1, high = 8)
+    for i in range(number):
+        name = input("Enter player name: ")
+        names.append(name)
+    print()
+        
+    game = BJ_Game(names)
+
+    again = None
+    while again != "n":
+        game.play()
+        again = games.ask_yes_no("\nDo you want to play again?: ")
+
+
+main()
+input("\n\nPress the enter key to exit.")
+
+
+
+
diff --git a/Chapter 9_2.py b/Chapter 9_2.py
new file mode 100644
index 0000000..312a11f
--- /dev/null
+++ b/Chapter 9_2.py	
@@ -0,0 +1,46 @@
+#Chapter 9_2.py
+#By: Karlos Calvillo
+#3/5/15
+#in collaboration with Tom Morrissey and Karl Pearson
+
+import random
+
+RANKS = ["A", "2", "3", "4", "5", "6", "7",
+             "8", "9", "10", "J", "Q", "K"]
+SUITS = ["c", "d", "h", "s"]
+
+player1=0
+player2=0
+
+player1Name=input("Enter name: ")
+player2Name=input("Enter name: ")
+
+while player1 <10 and player2 <10:
+    player1RankIndex=random.randrange(len(RANKS))
+    player1Rank=RANKS[player1RankIndex]
+    player1Suit=random.choice(SUITS)
+    player1Card=player1Rank+player1Suit
+
+    player2RankIndex=random.randrange(len(RANKS))
+    player2Rank=RANKS[player2RankIndex]
+    player2Suit=random.choice(SUITS)
+    player2Card=player2Rank+player2Suit
+    print(player1Name, ":", player1Card)
+    print(player2Name, ":", player2Card)
+    if player1RankIndex > player2RankIndex:
+        print(player1Name, "has won this round and gained one point.")
+        player1 += 1
+    elif player2RankIndex > player1RankIndex:
+        print(player2Name, "has won this round and gained one point.")
+        player2 += 1
+    else:
+        print("Oh no, its a tie. Nobody wins a point.")
+    print(player1Name, ":", player1)
+    print(player2Name, ":", player2)
+    input("press enter for the next round")
+if player1 >9:
+    print(player1Name, "has won this game and is much better than you")
+
+else:
+    print(player2Name, "has won this game and is much better than you")
+
diff --git a/Chapter 9_3.py b/Chapter 9_3.py
new file mode 100644
index 0000000..67ed6cc
--- /dev/null
+++ b/Chapter 9_3.py	
@@ -0,0 +1,198 @@
+#Chapter 9_3
+#By: Karlos Calvillo
+#3/5/15
+#in collaboration with Tom Morrissey and Karl Pearson
+
+import cards, games     
+
+class BJ_Card(cards.Card):
+    """ A Blackjack Card. """
+    ACE_VALUE = 1
+
+    @property
+    def value(self):
+        if self.is_face_up:
+            v = BJ_Card.RANKS.index(self.rank) + 1
+            if v > 10:
+                v = 10
+        else:
+            v = None
+        return v
+
+class BJ_Deck(cards.Deck):
+    """ A Blackjack Deck. """
+    def populate(self):
+        for suit in BJ_Card.SUITS: 
+            for rank in BJ_Card.RANKS: 
+                self.cards.append(BJ_Card(rank, suit))
+    
+
+class BJ_Hand(cards.Hand):
+    """ A Blackjack Hand. """
+    def __init__(self, name):
+        super(BJ_Hand, self).__init__()
+        self.name = name
+
+    def __str__(self):
+        rep = self.name + ":\t" + super(BJ_Hand, self).__str__()  
+        if self.total:
+            rep += "(" + str(self.total) + ")"        
+        return rep
+
+    @property     
+    def total(self):
+        # if a card in the hand has value of None, then total is None
+        for card in self.cards:
+            if not card.value:
+                return None
+        
+        # add up card values, treat each Ace as 1
+        t = 0
+        for card in self.cards:
+              t += card.value
+
+        # determine if hand contains an Ace
+        contains_ace = False
+        for card in self.cards:
+            if card.value == BJ_Card.ACE_VALUE:
+                contains_ace = True
+                
+        # if hand contains Ace and total is low enough, treat Ace as 11
+        if contains_ace and t <= 11:
+            # add only 10 since we've already added 1 for the Ace
+            t += 10   
+                
+        return t
+
+    def is_busted(self):
+        return self.total > 21
+
+
+class BJ_Player(BJ_Hand):
+    """ A Blackjack Player. """
+    def is_hitting(self):
+        response = games.ask_yes_no("\n" + self.name + ", do you want a hit? (Y/N): ")
+        return response == "y"
+
+    def bust(self):
+        print(self.name, "busts.")
+        self.lose()
+
+    def lose(self):
+        print(self.name, "loses.")
+
+    def win(self):
+        print(self.name, "wins.")
+
+    def push(self):
+        print(self.name, "pushes.")
+
+        
+class BJ_Dealer(BJ_Hand):
+    """ A Blackjack Dealer. """
+    def is_hitting(self):
+        return self.total < 17
+
+    def bust(self):
+        print(self.name, "busts.")
+
+    def flip_first_card(self):
+        first_card = self.cards[0]
+        first_card.flip()
+
+
+class BJ_Game(object):
+    """ A Blackjack Game. """
+    def __init__(self, names):      
+        self.players = []
+        for name in names:
+            player = BJ_Player(name)
+            self.players.append(player)
+
+        self.dealer = BJ_Dealer("Dealer")
+
+        self.deck = BJ_Deck()
+        self.deck.populate()
+        self.deck.shuffle()
+
+    @property
+    def still_playing(self):
+        sp = []
+        for player in self.players:
+            if not player.is_busted():
+                sp.append(player)
+        return sp
+
+    def __additional_cards(self, player):
+        while not player.is_busted() and player.is_hitting():
+            self.deck.deal([player])
+            print(player)
+            if player.is_busted():
+                player.bust()
+           
+    def play(self):
+        # deal initial 2 cards to everyone
+        self.deck.deal(self.players + [self.dealer], per_hand = 2)
+        self.dealer.flip_first_card()    # hide dealer's first card
+        for player in self.players:
+            print(player)
+        print(self.dealer)
+
+        # deal additional cards to players
+        for player in self.players:
+            self.__additional_cards(player)
+
+        self.dealer.flip_first_card()    # reveal dealer's first 
+
+        if not self.still_playing:
+            # since all players have busted, just show the dealer's hand
+            print(self.dealer)
+        else:
+            # deal additional cards to dealer
+            print(self.dealer)
+            self.__additional_cards(self.dealer)
+
+            if self.dealer.is_busted():
+                # everyone still playing wins
+                for player in self.still_playing:
+                    player.win()                    
+            else:
+                # compare each player still playing to dealer
+                for player in self.still_playing:
+                    if player.total > self.dealer.total:
+                        player.win()
+                    elif player.total < self.dealer.total:
+                        player.lose()
+                    else:
+                        player.push()
+
+        # remove everyone's cards
+        for player in self.players:
+            player.clear()
+        self.dealer.clear()
+        
+
+def main():
+    print("\t\tWelcome to Blackjack!\n")
+    
+    names = []
+    number = games.ask_number("How many players? (1 - 7): ", low = 1, high = 8)
+    for i in range(number):
+        name = input("Enter player name: ")
+        names.append(name)
+    print()
+        
+    game = BJ_Game(names)
+
+    again = None
+    while again != "n":
+        game.play()
+        again = games.ask_yes_no("\nDo you want to play again?: ")
+
+
+main()
+input("\n\nPress the enter key to exit.")
+
+
+
+
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