Agrego un handler para chequear si hay ganador en cada jugada

src/component/board.py

 import PySimpleGUI as sg
 from itertools import cycle
 from src.windows import board
+from src.handlers import board as board_handler
 
 
 def start():
+    """
+    Lanza la ejecución de la ventana del tablero
+    """
     window = loop()
     window.close()
 
 
 def loop():
+    """
+    Loop de la ventana del tablero que capta sus eventos
+    """
     player_1 = {"name": "Maria", "value": "X"}
     player_2 = {"name": "Marta", "value": "O"}
     turn = cycle([player_1, player_2])
@@ -25,6 +32,10 @@ def loop():
 
         if event.startswith("cell"):
             player = next(turn)
-            window[event].update(player["value"])
+            board_data, winner = board_handler.play(player, window, event, board_data)
+
+            if winner:
+                sg.popup(f"¡Felicitaciones! Ha ganado {player['name']}")
+                break
 
     return window

src/handlers/board.py

+WIN_PLAYS = [
+    [(0, 0), (1, 1), (2, 2)],  # diagonal
+    [(0, 2), (1, 1), (2, 0)],  # diagonal
+    [(0, 0), (0, 1), (0, 2)],  # vertical
+    [(1, 0), (1, 1), (1, 2)],  # vertical
+    [(2, 0), (2, 1), (2, 2)],  # vertical
+    [(0, 0), (1, 0), (2, 0)],  # horizontal
+    [(0, 1), (1, 1), (2, 1)],  # horizontal
+    [(0, 2), (1, 2), (2, 2)],  # horizontal
+]
+
+
+def play(player, window, event, board_data):
+    """
+    Ejecuta una jugada sobre el tablero para un jugador:
+    - Actualiza el tablero visual
+    - Agrega el valor en board_data
+    - Chequea si hay un ganador
+    """
+    window[event].update(player["value"])
+
+    _prefix, x, y = event.split("-")
+    board_data[int(x)][int(y)] = player["value"]
+
+    winner = check_win(board_data, player["value"])
+
+    return board_data, winner
+
+
+def check_win(board, value):
+    """
+    Chequea si se cumple alguna de las jugadas ganadoras
+    """
+    for win_play in WIN_PLAYS:
+        if check_play(win_play, board, value):
+            return True
+
+
+def check_play(win_play, board, value):
+    """
+    Chequea la si una jugada ganadora esta completa
+    """
+    # res = []
+    # for x, y in win_play:
+    #     res.append(board[x][y] == value)
+
+    # return all(res)
+
+    return all(board[x][y] == value for x, y in win_play)
\ No newline at end of file

src/windows/board.py

@@ -2,6 +2,9 @@ import PySimpleGUI as sg
 
 
 def build(player_1, player_2, board_data):
+    """
+    Construye la ventana del tablero del juego
+    """
     layout = [
         [sg.Text("Jugador 1: " + player_1["name"], key="-P1-", text_color="darkblue")],
         [sg.Text("Jugador 2: " + player_2["name"], key="-P2-", text_color="white")],