Python连接4检查win功能

我正在写一个连接4游戏,你可以在其中选择板的大小.对于大多数电路板尺寸而言,游戏可以完美运行,但是当电路板较高而宽度较大时,会给我带来问题.我不断得到索引超出范围错误,我不知道我做错了什么.就我的检查功能而言,这就是我现在所拥有的,因为它是唯一给我问题的部分.

def checkOWin(board):

    boardHeight = len(board)
    boardWidth = len(board[0])
    tile = 'O'
    # check horizontal spaces
    for y in range(boardHeight):
        for x in range(boardWidth - 3):
            if board[x][y] == tile and board[x+1][y] == tile and board[x+2][y] == tile and board[x+3][y] == tile:
                return True

    # check vertical spaces
    for x in range(boardWidth):
        for y in range(boardHeight - 3):
            if board[x][y] == tile and board[x][y+1] == tile and board[x][y+2] == tile and board[x][y+3] == tile:
                return True

    # check / diagonal spaces
    for x in range(boardWidth - 3):
        for y in range(3,boardHeight):
            if board[x][y] == tile and board[x+1][y-1] == tile and board[x+2][y-2] == tile and board[x+3][y-3] == tile:
                return True

    # check  diagonal spaces
    for x in range(boardWidth - 3):
        for y in range(boardHeight - 3):
            if board[x][y] == tile and board[x+1][y+1] == tile and board[x+2][y+2] == tile and board[x+3][y+3] == tile:
                return True

    return False

任何帮助或建议将不胜感激.提前致谢！

def checkOWin(board):
    boardHeight = len(board[0])
    boardWidth = len(board)

if board[x][y] == tile and board[x+1][y] == tile and board[x+2][y] == tile and board[x+3][y] == tile: