When the Player reaches the end of the board and tries to go further, no alert is given that the end of the board is reached. Even though there are no problems, it might be better to alert the user that the end of the board has been reached and that command is invalid.

When the Player reaches the end of the board and tries to go further, no alert is given that the end of the board is reached. Even though there are no problems, it might be better to alert the user that the end of the board has been reached and that command is invalid.