White often plays in hypermodern style, attacking the center from the flanks with pieces rather than occupying it with pawns.
The King's Indian Attack (KIA) is a system of development that White may use in reply to almost any Black opening moves.
Its greatest appeal may be that by adopting a set pattern of development, White can avoid the large amount of opening study required to prepare to meet the many different possible Black replies to 1.e4.
The English also frequently transposes into a d4 opening, but it can take on independent character as well including symmetrical variations (1.c4 c5) and the Sicilian Defense in reverse (1.c4 e5).
The opening can resemble a Dutch Defense in reverse after 1.f4 d5, or Black may try to disrupt White by playing 1...e5!?