diff --git a/.gitignore b/.gitignore
index ce7b164..03e76dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -51,4 +51,4 @@ l10n/
 launch.json
 venv
 *.db
-Client/Data/profiles.json
+Client/Data/profiles.json
\ No newline at end of file
diff --git a/Client/client.plantuml b/Client/client.plantuml
deleted file mode 100644
index f7fe1b4..0000000
--- a/Client/client.plantuml
+++ /dev/null
@@ -1,48 +0,0 @@
-@startuml Client
-!pragma useIntermediatePackages false
-
-class Client.client.GameClient {
-  - _ip: str
-  - _port: int
-  - _player: Player
-  - _player_number: int
-  - _symbol: str
-  - _opponent: Player
-  - _opponent_number: int
-  - _current_player: Player
-  - _lobby_status: list[str]
-  - _playfield: list[list[int]]
-  - _statistics: Statistics
-  - _chat_history: list[tuple[Player, str]]
-  - _winner: Player
-  - _error_history: list[str]
-  - _json_schema: Any
-  + __init__(ip:str, port:int, player:Player): None
-  - connect(): None
-  + create_game(player: Player, port:int = 8765): tuple[GameClient, asyncio.Task, Thread]
-  + join_game(player: Player, ip:str, port:int = 8765): tuple[GameClient, asyncio.Task]
-  + listen(): None
-  + get_player_by_uuid(uuid:str): Player
-  - _preprocess_message(message:str): str
-  - _message_handler(message_type: str): None
-  + join_lobby(): None
-  + lobby_ready(ready:bool = True): None
-  + lobby_kick(player_to_kick_index:int): None
-  + game_make_move(x:int, y:int): None
-  + chat_message(message:str): None
-  + close(): None
-}
-
-class Client.ui_client.GameClientUI {
-  - _tk_root: tk.Tk
-  - _in_queue: queue.Queue
-  - _out_queue: queue.Queue
-  + join_game(player: Player, ip: str, tk_root:tk.Tk, out_queue:Queue, in_queue:Queue, port: int = 8765): tuple[GameClientUI, asyncio.Task, asyncio.Task]
-  - listen(): None
-  - _message_handler(message_type: str): None
-  - await_commands(): None
-}
-
-Client.client.GameClient <|-- Client.ui_client.GameClientUI
-@enduml
-
diff --git a/README.md b/README.md
index 47b0c98..eb89867 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,26 @@
-# TicTacToeKojote
\ No newline at end of file
+# TicTacToeKojote
+
+This is a simple TicTacToe game written in Python. IT can be played by two players in a GUI. However, it only works on Windows.
+
+## Installation
+- Install Python 3.11 or higher from [python.org](https://www.python.org/downloads/)
+- Install the required packages by running `pip install -r requirements.txt` from the root directory of the project
+- Run the game by executing `python main.py` from the root directory of the project
+
+## Features
+- Play TicTacToe with a friend online
+- Play TicTacToe with a friend offline
+- Play TicTacToe against an AI (weak or strong)
+- Chat with your opponent during the game
+- Create Profiles
+- View your game statistics whenever you are connected to a server
+
+## How to play
+- **Manage your player profiles:** View Use Case 1: Manage Player Profiles
+- **Play against AI:** View the corresponding [sequence diagram](docs/sequence_diagrams/play_vs_ai.png)
+- **Play against another player locally:** View the corresponding [sequence diagram](docs/sequence_diagrams/play_locally.png)
+- **Host an online game:** View Use Case 3.1: Host Game
+- **Join an online game:** View Use Case 3.2: Join Game
+- **Leave an online game:** View Use Case 3.3: Leave Game
+- **Send Chat messages:** View Use Case 4: Chat
+- **Display the statistics:** View Use Case 5: Display Statistics
\ No newline at end of file
diff --git a/docs/class_diagrams/AI.png b/docs/class_diagrams/AI.png
new file mode 100644
index 0000000..eb3dcfa
Binary files /dev/null and b/docs/class_diagrams/AI.png differ
diff --git a/docs/class_diagrams/AI.puml b/docs/class_diagrams/AI.puml
new file mode 100644
index 0000000..b26c31d
--- /dev/null
+++ b/docs/class_diagrams/AI.puml
@@ -0,0 +1,75 @@
+@startuml AI
+!pragma useIntermediatePackages false
+
+class AI.ai_context.AIContext {
+   - _strategy: AIStrategy
+
+    + AIContext(strategy: ai_strategy.AIStrategy)
+    + None set_strategy(strategy: ai_strategy.AIStrategy)
+    + None run_strategy()
+}
+class AI.ai_rulebase.AIRulebase {
+    + check_win(state: Server.game_state.GameState)
+}
+abstract class AI.ai_strategy.AIStrategy {
+  - _strength: str
+  - _good_luck_message: str
+  - _good_game_message_lost: str
+  - _good_game_message_won: str
+  - _good_game_message_draw: str
+  - _current_uuid: str
+  - _rulebase: AI.ai_rulebase.AIRulebase
+  - _ip: str
+  - _port: int
+
+  + AIStrategy()
+  - post_init()
+  + None thread_entry()
+  + None run()
+  + None join_game()
+  - _message_handler(message_type: str)
+  - wish_good_luck()
+  - say_good_game()
+  - list[list[int]] get_empty_cells(game_status: list[list[int]])
+  + None do_turn()
+}
+
+class AI.ai_strategy.AdvancedAIStrategy {
+  - _current_uuid: str
+  - _strength: str
+  - _good_luck_message: str
+  - _good_game_message_lost: str
+  - _good_game_message_won: str
+  - _good_game_message_draw: str
+  - _player: Server.player.Player
+
+  + AdvancedAIStrategy(uuid: str = 'd90397a5-a255-4101-9864-694b43ce8a6c')
+  + None do_turn()
+}
+
+class AI.ai_strategy.WeakAIStrategy {
+  - _current_uuid: str
+  - _strength: str
+  - _good_luck_message: str
+  - _good_game_message_lost: str
+  - _good_game_message_won: str
+  - _good_game_message_draw: str
+  - _player: Server.player.Player
+
+    + WeakAIStrategy(uuid: str = '108eaa05-2b0e-4e00-a190-8856edcd56a5')
+    - check_winning_move(empty_cells: list[list[int]], player:int)
+    + None do_turn()
+}
+
+AI.ai_context.AIContext *-- AI.ai_strategy.AIStrategy
+AI.ai_strategy.AIStrategy <|-- AI.ai_strategy.AdvancedAIStrategy
+AI.ai_strategy.AIStrategy <|-- AI.ai_strategy.WeakAIStrategy
+AI.ai_strategy.AIStrategy *-- AI.ai_rulebase.AIRulebase
+AI.ai_strategy.AIStrategy --|> Client.client.GameClient
+AI.ai_rulebase.AIRulebase --|> Server.rulebase.Rulebase
+
+AI.ai_strategy.AdvancedAIStrategy *-- Server.player.Player
+AI.ai_strategy.WeakAIStrategy *-- Server.player.Player
+
+@enduml
+
diff --git a/docs/class_diagrams/Client.png b/docs/class_diagrams/Client.png
new file mode 100644
index 0000000..cf9e467
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diff --git a/docs/class_diagrams/Server.png b/docs/class_diagrams/Server.png
new file mode 100644
index 0000000..a84f5f4
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diff --git a/docs/class_diagrams/client.puml b/docs/class_diagrams/client.puml
new file mode 100644
index 0000000..1d732cf
--- /dev/null
+++ b/docs/class_diagrams/client.puml
@@ -0,0 +1,64 @@
+@startuml Client
+!pragma useIntermediatePackages false
+
+class Client.client.GameClient {
+    - _ip: str
+    - _port: int
+    - _player: Player
+    - _player_number: int
+    - _symbol: str
+    - _opponent: Player
+    - _opponent_number: int
+    - _starting_player: Player
+    - _current_player: Player
+    - _lobby_status: list[str]
+    - _playfield: list[list[int]]
+    - _statistics: Server.statistics.Statistics
+    - _chat_history: list[tuple[Player, str]]
+    - _winner: Player
+    - _error_history: list[str]
+    - _json_schema: Any
+
+    + None GameClient(ip:str, port:int, player:Player)
+    - None connect()
+    + tuple[GameClient, asyncio.Task, Thread] create_game(player: Player, port:int = 8765)
+    + tuple[GameClient, asyncio.Task] join_game(player: Player, ip:str, port:int = 8765)
+    + None listen()
+    + Player get_player_by_uuid(uuid:str)
+    - None _preprocess_message(message:str)
+    - None _message_handler(message_type: str)
+    + None join_lobby()
+    + None lobby_ready(ready:bool = True)
+    + None lobby_kick(player_to_kick_index:int)
+    + None game_make_move(x:int, y:int)
+    + None chat_message(message:str)
+    + None close()
+    + None terminate()
+}
+
+class Client.ui_client.GameClientUI {
+    - _tk_root: tk.Tk
+    - _in_queue: queue.Queue
+    - _out_queue: queue.Queue
+
+    + None GameClientUI(ip:str, port:int, player:Player, tk_root:tk.Tk, out_queue:Queue, in_queue:Queue)
+    + tuple[GameClientUI, asyncio.Task, asyncio.Task] join_game(player: Player, ip: str, tk_root:tk.Tk, out_queue:Queue, in_queue:Queue, port: int = 8765)
+    - None listen()
+    - None _message_handler(message_type: str)
+    - None await_commands()
+    - None send_gamestate_to_ui()
+}
+
+class Client.profile_save.Profile {
+    + list[Player] get_profiles()
+    + None set_profiles(players:list[Player], selected:int)
+    + None delete_all_profiles()
+}
+
+class Server.statistics.Statistics {
+}
+
+Client.client.GameClient <|-- Client.ui_client.GameClientUI
+Client.client.GameClient *-- Server.statistics.Statistics
+@enduml
+
diff --git a/docs/class_diagrams/server.puml b/docs/class_diagrams/server.puml
new file mode 100644
index 0000000..ba41fef
--- /dev/null
+++ b/docs/class_diagrams/server.puml
@@ -0,0 +1,90 @@
+@startuml Server
+!pragma useIntermediatePackages false
+
+class Server.game.Game {
+    - _uuid: UUID
+    - _id: int
+    + state: Server.gamestate.GameState
+    + players: list[Server.player.Player]
+    + rule_base: RuleBase
+
+    + Game(player1: Player, player2: Player, rule_base: RuleBase = RuleBase())
+    + None move(player: int, new_position: tuple[int, int])
+    + str current_player_uuid()
+    + Server.player.Player winner()
+}
+class Server.gamestate.GameState {
+    - _playfield: list[list[int]]
+    - _finished: bool 
+    - _winner: int 
+    - _current_player: int 
+
+    + GameState(playfield_dimensions: tuple[int, int] = (3,3))
+    + None set_player_position(player: int, new_position: tuple[int, int])
+    + None set_winner(winner: int)
+    + int winner()
+    + bool finished()
+    + list[list[int]] playfield()
+    + int playfield_value(position: tuple[int, int])
+    + tuple[int, int] playfield_dimensions()
+    + int current_player()
+}
+class Server.player.Player {
+  + uuid: UUID
+  + display_name: str
+  + color: int
+  + ready: bool
+
+  + Player(display_name: str, color: int, uuid: UUID = uuid4(), ready:bool = False)
+  + dict[str, Any] as_dict()
+  + Player from_dict(data: dict[str, Any])
+}
+class Server.rulebase.RuleBase {
+  - _playfield_dimensions: tuple[int, int]
+
+    + RuleBase(playfield_dimensions: tuple[int, int] = (3,3))
+    + bool is_move_valid(state: GameState, new_position: tuple[int, int])
+    + None check_win(state: GameState)
+    + bool is_game_state_valid(state: GameState)
+    + list[list[int]] transpose(matrix: list[list[int]])
+}
+class Server.websocket_server.Lobby {
+  - _players: dict[str, Server.player.Player]
+  - _game: Server.game.Game
+  - _inprogress: bool
+  - _port: int
+  - _connections: list[websockets.server.WebSocketServerProtocol]
+  - _stats: Server.statistics.Statistics
+  - _json_schema: dict[str, Any]
+
+  + Lobby(admin:Player, port: int = 8765)
+  + None handler(websocket: websockets.server.WebSocketServerProtocol)
+  - None _end_game()
+  + None start_server()
+  + None run()
+}
+class Server.statistics.Statistics {
+  - path: str
+  - conn: sqlite3.Connection
+  - cursor: sqlite3.Cursor
+
+    + Statistics(path: str = os.path.abspath('Server/Data/statistics.db'))
+    + list[tuple[str, int]] get_statistics()
+    + None increment_emojis(player: Player, message: str)
+    + None increment_moves(player: Player)
+    + None increment_games(player_list: list[Player], winner: int)
+    - None _increment_win(player: Player)
+    - None _increment_loss(player: Player)
+    - None _increment_draws(player: Player)
+    - None _check_add_profile(player: Player)
+    - bool _check_profile(uuid_str: str)
+    - None _add_profile(player: Player)
+}
+Server.game.Game *-- Server.rulebase.RuleBase
+Server.game.Game *-- Server.gamestate.GameState
+Server.game.Game *-- Server.player.Player
+Server.websocket_server.Lobby *-- Server.game.Game
+Server.websocket_server.Lobby *-- Server.statistics.Statistics
+Server.websocket_server.Lobby *-- Server.player.Player
+@enduml
+
diff --git a/docs/patterns/observer.png b/docs/patterns/observer.png
new file mode 100644
index 0000000..80896d2
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diff --git a/docs/patterns/observer.puml b/docs/patterns/observer.puml
new file mode 100644
index 0000000..808543d
--- /dev/null
+++ b/docs/patterns/observer.puml
@@ -0,0 +1,31 @@
+@startuml Server
+!pragma useIntermediatePackages false
+
+class Server.websocket_server.Lobby {
+  - _connections: set[WebSocketServerProtocol]
+  + handler(websocket: WebSocketServerProtocol)
+}
+
+class websockets.WebSocketServerProtocol {
+    + send(message: str)
+    + str recv()
+}
+
+note left of Server.websocket_server.Lobby::handler
+    Whenever a new connection is made, the handler is called. 
+    The handler adds the connection to the set of connections 
+    (_connections) and removes it when the connection is closed.
+    Whenever a message is received, the handler uses 
+    websockets.broadcast() to send the updated game state to all 
+    connections in _connections.
+end note
+
+note bottom of websockets.WebSocketServerProtocol
+    The WebSocketServerProtocol is a protocol that is used to 
+    handle the WebSocket connection. It has methods to send and 
+    receive messages, and it also has methods to handle the 
+    opening and closing of the connection.
+end note
+
+Server.websocket_server.Lobby o-- websockets.WebSocketServerProtocol
+@enduml
\ No newline at end of file
diff --git a/docs/sequence_diagrams/create_profile.png b/docs/sequence_diagrams/create_profile.png
new file mode 100644
index 0000000..7b21052
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diff --git a/docs/sequence_diagrams/create_profile.puml b/docs/sequence_diagrams/create_profile.puml
new file mode 100644
index 0000000..6cd1756
--- /dev/null
+++ b/docs/sequence_diagrams/create_profile.puml
@@ -0,0 +1,15 @@
+@startuml
+title Create Player Profile
+
+actor Player
+database Client
+
+Player->Client: Click Profile Button
+Client->Player: Show Profile Creation Prompt
+Player->Client: Set Name
+Player->Client: Set Color
+Player->Client: Click Create Profile Button
+Client->Client: Save Profile on Disk
+Client->Player: Show Profile
+
+@enduml
\ No newline at end of file
diff --git a/docs/sequence_diagrams/delete_profile.png b/docs/sequence_diagrams/delete_profile.png
new file mode 100644
index 0000000..2d7a199
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diff --git a/docs/sequence_diagrams/delete_profile.puml b/docs/sequence_diagrams/delete_profile.puml
new file mode 100644
index 0000000..c31db42
--- /dev/null
+++ b/docs/sequence_diagrams/delete_profile.puml
@@ -0,0 +1,13 @@
+@startuml
+title Delete Player Profile
+
+actor Player
+database Client
+
+Player->Client: Click Profile Button
+Client->Player: Show Profile
+Player->Client: Click Delete Profile Button
+Client->Client: Delete Profile from Disk
+Client->Player: Show Profile Creation Prompt
+
+@enduml
\ No newline at end of file
diff --git a/docs/sequence_diagrams/edit_profile.png b/docs/sequence_diagrams/edit_profile.png
new file mode 100644
index 0000000..7c9b615
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diff --git a/docs/sequence_diagrams/edit_profile.puml b/docs/sequence_diagrams/edit_profile.puml
new file mode 100644
index 0000000..f21d2d6
--- /dev/null
+++ b/docs/sequence_diagrams/edit_profile.puml
@@ -0,0 +1,16 @@
+@startuml
+title Edit Player Profile
+
+actor Player
+database Client
+
+Player->Client: Click Profile Button
+Client->Player: Show Profile
+Player->Client: Click Edit Profile Button
+Player->Client: Change Name
+Player->Client: Change Color
+Player->Client: Click Edit Profile Button
+Client->Client: Save Profile on Disk
+Client->Player: Show Profile
+
+@enduml
\ No newline at end of file
diff --git a/docs/sequence_diagrams/host_game.png b/docs/sequence_diagrams/host_game.png
new file mode 100644
index 0000000..5500aa6
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diff --git a/docs/sequence_diagrams/host_game.puml b/docs/sequence_diagrams/host_game.puml
new file mode 100644
index 0000000..0479241
--- /dev/null
+++ b/docs/sequence_diagrams/host_game.puml
@@ -0,0 +1,15 @@
+@startuml
+title Host Game
+
+actor Player as p
+database Client
+
+p->Client: Click Multiplayer Button
+Client->p: Display Multiplayer Menu
+p->Client: Click Create a new online game Button
+Client->Client: Host Server locally
+Client->p: Display Multiplayer Lobby
+Client->Network: Send advertisements
+Client->Client: Wait for other players to join
+
+@enduml
diff --git a/docs/sequence_diagrams/join_game.png b/docs/sequence_diagrams/join_game.png
new file mode 100644
index 0000000..3a61c71
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diff --git a/docs/sequence_diagrams/join_game.puml b/docs/sequence_diagrams/join_game.puml
new file mode 100644
index 0000000..eb84088
--- /dev/null
+++ b/docs/sequence_diagrams/join_game.puml
@@ -0,0 +1,21 @@
+@startuml
+title Join Game
+
+actor Player as p
+database Client
+database Server as s
+
+p->Client: Click Multiplayer Button
+Client->p: Display Multiplayer Menu
+p->Client: Click Join by address Button
+Client->p: Show IP-Address Input field
+p->Client: Enter IP-Address
+p->Client: Click Connect Button
+Client->s: Join Lobby
+s->Client: Send Server information
+Client->p: Display Game Lobby
+p->Client: Click Ready Button
+Client->s: Get Ready
+s->s: Wait for other Player to get ready
+
+@enduml
diff --git a/docs/sequence_diagrams/leave_game.png b/docs/sequence_diagrams/leave_game.png
new file mode 100644
index 0000000..afd9cd5
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diff --git a/docs/sequence_diagrams/leave_game.puml b/docs/sequence_diagrams/leave_game.puml
new file mode 100644
index 0000000..638a71b
--- /dev/null
+++ b/docs/sequence_diagrams/leave_game.puml
@@ -0,0 +1,17 @@
+@startuml
+title Leave Game
+
+actor Player as p
+database Client
+database Server as s
+actor Player2 as p2
+
+p->Client: Click Menu Button
+Client->s: Player disconnected
+Client->s: Close connection
+Client->p: Show Main Menu
+s->p2: You have won
+s->p2: Close Connection
+s->s: Terminate
+
+@enduml
diff --git a/docs/sequence_diagrams/play_locally.png b/docs/sequence_diagrams/play_locally.png
new file mode 100644
index 0000000..ee1f1dc
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diff --git a/docs/sequence_diagrams/play_locally.puml b/docs/sequence_diagrams/play_locally.puml
new file mode 100644
index 0000000..2c657b8
--- /dev/null
+++ b/docs/sequence_diagrams/play_locally.puml
@@ -0,0 +1,15 @@
+@startuml
+title Play locally
+
+actor Player as p
+database Client
+
+p->Client: Click Multiplayer Button
+Client->p: Display Multiplayer Menu
+p->Client: Click Create local Game Button
+Client->p: Display Profile selection screen
+p->Client: Select Profiles for both players
+p->Client: Click Start Game Button
+Client->p: Display Playfield
+
+@enduml
diff --git a/docs/sequence_diagrams/play_vs_ai.png b/docs/sequence_diagrams/play_vs_ai.png
new file mode 100644
index 0000000..e20f61e
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diff --git a/docs/sequence_diagrams/play_vs_ai.puml b/docs/sequence_diagrams/play_vs_ai.puml
new file mode 100644
index 0000000..1111255
--- /dev/null
+++ b/docs/sequence_diagrams/play_vs_ai.puml
@@ -0,0 +1,21 @@
+@startuml
+title Play versus AI
+
+actor Player as p
+database Client
+actor AI as a
+
+p->Client: Click Singleplayer Button
+Client->p: Display AI Difficulty Selection
+p->Client: Select AI Difficulty by clicking Strong or Weak AI Button
+Client->Client: Host Server locally
+Client->p: Display Game Lobby
+Client->a: Create AI
+a->Client: Connect to Server
+a->Client: Get Ready
+Client->p: Show AI is ready
+p->Client: Click Ready Button
+p->Client: Click Start Game Button
+Client->p: Show Playfield
+
+@enduml
diff --git a/docs/sequence_diagrams/send_chat.png b/docs/sequence_diagrams/send_chat.png
new file mode 100644
index 0000000..729e678
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diff --git a/docs/sequence_diagrams/send_chat.puml b/docs/sequence_diagrams/send_chat.puml
new file mode 100644
index 0000000..f4d5de4
--- /dev/null
+++ b/docs/sequence_diagrams/send_chat.puml
@@ -0,0 +1,17 @@
+@startuml
+title Send Chat Message
+
+actor Player as p
+database Client
+database Server as s
+actor Player2 as p2
+
+p->Client: Click on the message entry box
+p->p: Enter message
+p->Client: Click Send Button
+Client->s: Send chat message
+s->p2: Send chat message
+s-> Client: Send chat message
+Client->p: Display chat message
+
+@enduml
diff --git a/docs/sequence_diagrams/view_profile.png b/docs/sequence_diagrams/view_profile.png
new file mode 100644
index 0000000..b555904
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diff --git a/docs/sequence_diagrams/view_profile.puml b/docs/sequence_diagrams/view_profile.puml
new file mode 100644
index 0000000..304efd7
--- /dev/null
+++ b/docs/sequence_diagrams/view_profile.puml
@@ -0,0 +1,10 @@
+@startuml
+title View Player Profile
+
+actor Player
+database Client
+
+Player->Client: Click Profile Button
+Client->Player: Show Profile
+
+@enduml
\ No newline at end of file