Chess Board
[ECO code A16]
TRANSPOSITION
ENGLISH OPG. to KING'S INDIAN DEF. (Classical V.)
White advances his QPawn to contest for control of Black's K4(e5) in case Black plays 4..P-K4.
Black fianchettoes his King's Bishop to complete the transposition, ready to face White's choice of Classical / 4 Pawns / Averbakh lines. 
    White  Black    Transp.White Black
 1. P-QB4  Kt-KB3   (1.	P-Q4   Kt-KB3)
 2. Kt-QB3 P-KKt3   (2.	P-QB4  P-KKt3)
 3. P-K4   P-Q3     (3.	Kt-QB3 B-Kt2 )
 4. P-Q4   B-Kt2    (4.	P-K4   P-Q3  )
Continue: Transpose or Undo or Jump or Clear