diff --git a/README.md b/README.md
index a4f9197..caf83cb 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,10 @@ de *Nichola Lacey*
 - [067](./trtl/turtle08.py)
 - [068](./trtl/turtle09.py)
 
+## Retos Intermedios
+
+- [069-079](./interm/interm01.py)
+
 ## Uso
 
 ```sh
diff --git a/interm/interm.py b/interm/interm.py
new file mode 100644
index 0000000..6f09945
--- /dev/null
+++ b/interm/interm.py
@@ -0,0 +1,224 @@
+from . import interm01 as ex01
+from common.common import (
+        print_challenges,
+        user_input,
+        run_func,
+        clear
+)
+
+def challenges01():
+    select_ok = False
+    while not select_ok:
+        clear()
+        i, ex1 = print_challenges(ex01.interm001)
+        selection = user_input(i)
+        match selection:
+            case 1:
+                run_func(ex1.countries)
+            case 2:
+                run_func(ex1.country_pos)
+            case 3:
+                run_func(ex1.two_sports)
+            case 4:
+                run_func(ex1.del_subject)
+            case 5:
+                run_func(ex1.fav_food)
+            case 6:
+                run_func(ex1.ten_colours)
+            case 7:
+                run_func(ex1.four_nums)
+            case 8:
+                run_func(ex1.three_names)
+            case 9:
+                run_func(ex1.uninvite)
+            case 10:
+                run_func(ex1.tv_titles)
+            case 11:
+                run_func(ex1.nums_list)
+            case 'v':
+                return
+            case 's':
+                select_ok = True
+                exit(0)
+            case _:
+                continue
+
+#def challenges02():
+#    select_ok = False
+#    while not select_ok:
+#        clear()
+#        i, ex2 = print_challenges(ex02.basics_002)
+#        selection = user_input(i)
+#        match selection:
+#            case 1:
+#                run_func(ex2.mayor)
+#            case 2:
+#                run_func(ex2.muy_alto)
+#            case 3:
+#                run_func(ex2.gracias)
+#            case 4:
+#                run_func(ex2.fav_color)
+#            case 5:
+#                run_func(ex2.clima)
+#            case 6:
+#                run_func(ex2.edad_conducir)
+#            case 7:
+#                run_func(ex2.alto_bajo)
+#            case 8:
+#                run_func(ex2.uno_dos_tres)
+#            case 'v':
+#                return
+#            case 's':
+#                exit(0)
+#            case _:
+#                continue
+#
+#def challenges03():
+#    select_ok = False
+#    while not select_ok:
+#        clear()
+#        i, ex3 = print_challenges(ex03.basics_003)
+#        selection = user_input(i)
+#        match selection:
+#            case 1:
+#                run_func(ex3.name_length)
+#            case 2:
+#                run_func(ex3.fullname_length)
+#            case 3:
+#                run_func(ex3.full_name_lower)
+#            case 4:
+#                run_func(ex3.nursery)
+#            case 5:
+#                run_func(ex3.any_mayus)
+#            case 6:
+#                run_func(ex3.mambo_name)
+#            case 7:
+#                run_func(ex3.pig_latin)
+#            case 'v':
+#                return
+#            case 's':
+#                exit(0)
+#            case _:
+#                continue
+#
+#def challenges04():
+#    select_ok = False
+#    while not select_ok:
+#        clear()
+#        i, ex4 = print_challenges(ex04.basics_004)
+#        selection = user_input(i)
+#        match selection:
+#            case 1:
+#                run_func(ex4.decims)
+#            case 2:
+#                run_func(ex4.decims_round)
+#            case 3:
+#                run_func(ex4.square_root)
+#            case 4:
+#                run_func(ex4.pi_round)
+#            case 5:
+#                run_func(ex4.circle_area)
+#            case 6:
+#                run_func(ex4.cyl_vol)
+#            case 7:
+#                run_func(ex4.friendly_div)
+#            case 8:
+#                run_func(ex4.circ_trian)
+#            case 'v':
+#                return
+#            case 's':
+#                exit(0)
+#            case _:
+#                continue
+#
+#def challenges05():
+#    select_ok = False
+#    while not select_ok:
+#        clear()
+#        i, ex5 = print_challenges(ex05.basics_005)
+#        selection = user_input(i)
+#        match selection:
+#            case 1:
+#                run_func(ex5.name_three)
+#            case 2:
+#                run_func(ex5.name_num)
+#            case 3:
+#                run_func(ex5.name_nl)
+#            case 4:
+#                run_func(ex5.name_nl_num)
+#            case 5:
+#                run_func(ex5.times_table)
+#            case 6:
+#                run_func(ex5.count_down)
+#            case 7:
+#                run_func(ex5.mambo_name)
+#            case 8:
+#                run_func(ex5.may_add)
+#            case 9:
+#                run_func(ex5.up_or_down)
+#            case 10:
+#                run_func(ex5.guests)
+#            case 'v':
+#                return
+#            case 's':
+#                exit(0)
+#            case _:
+#                continue
+#
+#def challenges06():
+#    select_ok = False
+#    while not select_ok:
+#        clear()
+#        i, ex6 = print_challenges(ex06.basics_006)
+#        selection = user_input(i)
+#        match selection:
+#            case 1:
+#                run_func(ex6.over50)
+#            case 2:
+#                run_func(ex6.last_5)
+#            case 3:
+#                run_func(ex6.add_another)
+#            case 4:
+#                run_func(ex6.party)
+#            case 5:
+#                run_func(ex6.compnum)
+#            case 6:
+#                run_func(ex6.between)
+#            case 7:
+#                run_func(ex6.bottles)
+#            case 'v':
+#                return
+#            case 's':
+#                exit(0)
+#            case _:
+#                continue
+#
+#def challenges07():
+#    select_ok = False
+#    while not select_ok:
+#        clear()
+#        i, ex7 = print_challenges(ex07.basics_007)
+#        selection = user_input(i)
+#        match selection:
+#            case 1:
+#                run_func(ex7.rand_range)
+#            case 2:
+#                run_func(ex7.rand_choice)
+#            case 3:
+#                run_func(ex7.rand_game)
+#            case 4:
+#                run_func(ex7.rand_pick)
+#            case 5:
+#                run_func(ex7.rand_10)
+#            case 6:
+#                run_func(ex7.rand_10_upgrade)
+#            case 7:
+#                run_func(ex7.rand_quiz)
+#            case 8:
+#                run_func(ex7.rand_color)
+#            case 'v':
+#                return
+#            case 's':
+#                exit(0)
+#            case _:
+#                continue
diff --git a/interm/interm01.py b/interm/interm01.py
new file mode 100644
index 0000000..24809d1
--- /dev/null
+++ b/interm/interm01.py
@@ -0,0 +1,171 @@
+class interm001:
+
+    def countries(self):
+        """Create a tuple containing the names of five countries and display the
+        whole tuple. Ask the user to enter one of the countries that have been
+        shown to them and then display the index number (i.e. position in the
+        list) of that item in the tuple."""
+        counties = ('Peru', 'Bolivia', 'Brazil', 'Chile', 'Argentina')
+        print('Paises:', ', '.join(counties))
+        sel = input("Ingresa uno de los países mostrados: ")
+        print(f"Indice: {counties.index(sel)}")
+
+    def country_pos(self):
+        """Add to program 069 to ask the user to enter a number and display the
+        country in that position."""
+        counties = ('Peru', 'Bolivia', 'Brazil', 'Chile', 'Argentina')
+        print('Indice | Pais\n------------------')
+        for i,c in enumerate(counties):
+            print(f"   {i}   | {c}")
+        num = int(input("\nIngresa un indice: "))
+        if num < len(counties):
+            print(counties[num])
+        else:
+            print(f"El índice {num} no existe")
+
+    def two_sports(self):
+        """Create a list of two sports. Ask the user what their favourite sport
+        is and add this to the end of the list. Sort the list and display it."""
+        sports = ['Kaiju Big Battle', 'Cheese rolling ']
+        fav = input("Ingresa tu deporte favorito: ")
+        sports.append(fav)
+        sports.sort()
+        print("Deportes: ", ", ".join(sports))
+
+    def del_subject(self):
+        """Create a list of six school subjects. Ask the user which of these
+        subjects they don’t like. Delete the subject they have chosen from the
+        list before you display the list again."""
+        subjs = ['Redes', 'POO', 'SQL', 'Algoritmos', 'Hardware']
+        print("Materias: ", ", ".join(subjs))
+        sel = input("¿Cual de estas materias no te agrada?: ")
+        if sel in subjs:
+            subjs.remove(sel)
+        else:
+            print(f"{sel} no está en la lista")
+        print("Materias: ", ", ".join(subjs))
+
+    def fav_food(self):
+        """Ask the user to enter four of their favourite foods and store them in
+        a dictionary so that they are indexed with numbers starting from 1.
+        Display the dictionary in full, showing the index number and the item.
+        Ask them which they want to get rid of and remove it from the list.
+        Sort the remaining data and display the dictionary."""
+        favs = {}
+        print("Ingresa 4 platos/comidas favoritas")
+        for i in range(1,5):
+            fav = input(f"Ingresa tu comida favorita para la posición {i}: ")
+            favs[i] = fav
+        print(*[str(key) + ':' + str(value) for key,value in favs.items()])
+        sel = int(input("Ingresa el indice del menos favorito: "))
+        favs.pop(sel)
+        print(', '.join(sorted(favs.values())))
+
+    def ten_colours(self):
+        """Enter a list of ten colours. Ask the user for a starting number
+        between 0 and 4 and an end number between 5 and 9. Display the list for
+        those colours between the start and end numbers the user input."""
+        colors = ['Amarillo', 'Azul', 'Celeste', 'Blanco', 'Magenta',
+                  'Naranjo', 'Negro', 'Rojo', 'Rosado', 'Verde']
+        num_1 = int(input("Ingresa un número entre 0 y 4: "))
+        num_2 = int(input("Ingresa un número entre 5 y 9: "))
+        print(', '.join(colors[num_1:num_2+1]))
+
+    def four_nums(self):
+        """Create a list of four three-digit numbers. Display the list to the
+        user, showing each item from the list on a separate line. Ask the user
+        to enter a three-digit number. If the number they have typed in matches
+        one in the list, display the position of that number in the list,
+        otherwise display the message \"That is not in the list\"."""
+        nums = [475, 912, 661, 101]
+        print(*[str(value)+'\n' for value in nums])
+        sel = int(input("Ingresa un número de 3 digitos: "))
+        if sel in nums:
+            print(f"{sel} está en el índice: {nums.index(sel)}")
+        else:
+            print(f"{sel} no está en la lista")
+        
+
+    def three_names(self):
+        """Ask the user to enter the names of three people they want to invite
+        to a party and store them in a list. After they have entered all three
+        names, ask them if they want to add another. If they do, allow them to
+        add more names until they answer \"no\". When they answer \"no\",
+        display how many people they have invited to the party."""
+        names = []
+        for i in range(1,4):
+            name = input(f"Ingresa el nombre nro. {i}: ")
+            names.append(name)
+        while True:
+            ask = input("¿Deseas agregar mas personas? (si|no): ").lower()
+            if ask == 'si':
+                name = input(f"Ingresa el nombre nro. {len(names)+1}: ")
+                names.append(name)
+            else:
+                break
+        print(f"Has invitado {len(names)} personas")
+
+
+    def uninvite(self):
+        """Change program 076 so that once the user has completed their list of
+        names, display the full list and ask them to type in one of the names on
+        the list. Display the position of that name in the list. Ask the user if
+        they still want that person to come to the party. If they answer \"no\",
+        delete that entry from the list and display the list again."""
+        names = []
+        for i in range(1,4):
+            name = input(f"Ingresa el nombre nro. {i}: ")
+            names.append(name)
+        while True:
+            ask = input("¿Deseas agregar mas personas? (s|n): ").lower()
+            if ask == 's':
+                name = input(f"Ingresa el nombre nro. {len(names)+1}: ")
+                names.append(name)
+            else:
+                break
+        print("\nLista de invitados:")
+        for name in names:
+            print('  '+name)
+        name = input("\nIngresa el nombre de un invitado: ")
+        if name in names:
+            print(f"Invitado {name}, en la posición {names.index(name)}")
+            resp = input("¿Quieres mantener la invitación? (si|no): ").lower()
+            if resp == 'no':
+                names.remove(name)
+                print("Lista de invitados:")
+                for name in names:
+                    print('  '+name)
+        else:
+            print(f"{name} no está en la lista de invitados")
+
+    def tv_titles(self):
+        """Create a list containing the titles of four TV programmes and display
+        them on separate lines. Ask the user to enter another show and a position
+        they want it inserted into the list. Display the list again, showing all
+        five TV programmes in their new positions."""
+        tv = ['Rick & Morty', 'South Park', 'American Dad', 'Family Guy']
+        for show in tv:
+            print(show)
+        new_show = input("\nIngresa una serie: ")
+        new_pos = int(input("Ingresa una posición: "))
+        tv.insert(new_pos, new_show)
+        for show in tv:
+            print(show)
+
+    def nums_list(self):
+        """Create an empty list called \"nums\". Ask the user to enter numbers.
+        After each number is entered, add it to the end of the nums list and
+        display the list. Once they have entered three numbers, ask them if they
+        still want the last number they entered saved. If they say \"no\",
+        remove the last item from the list. Display the list of numbers."""
+        nums = []
+        while True:
+            num = input("Ingresa un número: ")
+            nums.append(num)
+            print('Lista:' ,', '.join(nums))
+            if len(nums) >= 3:
+                resp = input("¿Deseas mantener el último número agregado? (si|no): ").lower()
+                if resp == 'no':
+                    nums.pop()
+                break
+        print('Lista:' ,', '.join(nums))
diff --git a/main.py b/main.py
index c55ca32..9afacfc 100755
--- a/main.py
+++ b/main.py
@@ -2,13 +2,14 @@
 
 from basic import basic
 from trtl import trtl
+from interm import interm
 from common.common import clear, user_input, opcs_default
 
 def toc():
     content="""\tContenido\n
     1) Basicos 001-059
     2) Turtle 060-068
-    3) Intermedio 069-123
+    3) Intermedios 069-123
     4) Tkinter 124-138
     5) SQLite 139-145
     ...
@@ -64,7 +65,39 @@ def interm_challenges():
     6) Interm 111-117
     7) Interm 118-123
     """
-    print(content)
+    select_ok = False
+    while not select_ok:
+        clear()
+        print(content)
+        opcs_default(1)
+        selection = user_input(1)
+        match selection:
+            case 1:
+                interm.challenges01()
+            case 2:
+                #interm.challenges02()
+                pass
+            case 3:
+                #interm.challenges03()
+                pass
+            case 4:
+                #interm.challenges04()
+                pass
+            case 5:
+                #interm.challenges05()
+                pass
+            case 6:
+                #interm.challenges06()
+                pass
+            case 7:
+                #interm.challenges07()
+                pass
+            case 'v':
+                return
+            case 's':
+                exit(0)
+            case _:
+                continue
 
 def tkinter_challenges():
     content = """