Complex sentence: The setup Be3 and Qd2 is very common against the King's Indian Defence and the Sicilian Dragon, and can also be used against the Pirc; indeed, this system is as old as the Pirc itself.
Split into simpler sentences: The setup Be3 and Qd2 is very common against the King's Indian Defence and the Sicilian Dragon, and can also be used against the Pirc. Indeed this system is as old as the Pirc itself.