用9个数字分别代表九宫格棋盘的9个位置，小明和小黑下棋，用一串数字代表落子位置，小明先走，编写程序实现输入一串数字判断输赢

可以使用以下的 Python 代码实现输入一串数字判断输赢：

def check_winner(move_sequence):
    winning_positions = [[0, 1, 2], [3, 4, 5], [6, 7, 8], [0, 3, 6], [1, 4, 7], [2, 5, 8], [0, 4, 8], [2, 4, 6]]

    player_moves = [[], []]
    for i, move in enumerate(move_sequence):
        player_moves[i % 2].append(int(move))

    for positions in winning_positions:
        if all(pos in player_moves[i % 2] for pos in positions):
            return f"Player {i % 2 + 1} wins!"

    if len(move_sequence) == 9:
        return "It's a draw!"

    return "Game in progress."

# 示例输入：123456789
move_sequence = input("请输入一串数字代表落子位置：")
result = check_winner(move_sequence)
print(result)

你可以输入一串数字来测试这个程序，例如输入 `123456789`，程序将根据输入的数字判断输赢并输出结果。