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import gradio as gr
# --- Game Logic ---
def check_winner(board):
wins = [
[0, 1, 2], [3, 4, 5], [6, 7, 8], # rows
[0, 3, 6], [1, 4, 7], [2, 5, 8], # cols
[0, 4, 8], [2, 4, 6] # diagonals
]
for i, j, k in wins:
if board[i] == board[j] == board[k] and board[i] != "":
return board[i]
if "" not in board:
return "Draw"
return None
def minimax(board, is_maximizing):
winner = check_winner(board)
if winner == "O": return 1
if winner == "X": return -1
if winner == "Draw": return 0
if is_maximizing:
best = -float("inf")
for i in range(9):
if board[i] == "":
board[i] = "O"
score = minimax(board, False)
board[i] = ""
best = max(best, score)
return best
else:
best = float("inf")
for i in range(9):
if board[i] == "":
board[i] = "X"
score = minimax(board, True)
board[i] = ""
best = min(best, score)
return best
def ai_move(board):
best_score = -float("inf")
move = None
for i in range(9):
if board[i] == "":
board[i] = "O"
score = minimax(board, False)
board[i] = ""
if score > best_score:
best_score = score
move = i
return move
def play_game(board, move):
if board[move] != "":
return board, "Invalid move!"
board[move] = "X"
winner = check_winner(board)
if winner:
return board, f"Winner: {winner}"
ai = ai_move(board)
if ai is not None:
board[ai] = "O"
winner = check_winner(board)
if winner:
return board, f"Winner: {winner}"
return board, "Your turn"
def reset_game():
return [""] * 9, "Game reset!"
# --- Gradio Interface ---
with gr.Blocks() as demo:
gr.Markdown("## Smart Tic-Tac-Toe vs AI")
board_state = gr.State([""] * 9)
status = gr.Label(value="Your turn")
buttons = []
with gr.Row():
for i in range(3):
with gr.Column():
for j in range(3):
idx = i*3 + j
btn = gr.Button("")
buttons.append(btn)
reset_btn = gr.Button("Reset Game")
for idx, btn in enumerate(buttons):
btn.click(fn=play_game, inputs=[board_state, gr.Number(value=idx)], outputs=[board_state, status])
reset_btn.click(fn=reset_game, inputs=None, outputs=[board_state, status])
demo.launch()
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