In theory, an ICS can be accessed from any TELNET client. However, almost all users choose to play using a graphical client, called an interface. Currently, the most popular interface is XBoard (and its Windows counterpart, WinBoard). In recent years, however, it has lost ground to newer interfaces like Pychess and eboard. XICS is an X graphical interface to any Internet chess server. Unlike earlier text-based ICS clients, XICS allows the players to see the board and play pieces graphically, usually in a 2-D configuration.