Chess Board
[ECO code A17]
TRANSPOSITION
ENGLISH OPENING to NIMZO-INDIAN DEFENCE

White has advanced his QP to the vacant centre.
Black transposes into the Nimzo-Indian Defence by developing his King's Bishop to pin White's QKt to its king, preventing White playing a defended 4.P-K4 for centre control and seeking to impose doubled pawns on White. He also enables castling. B-Alt.
    White  Black    Transp.White Black
 1. P-QB4  Kt-KB3   (1.	P-Q4   Kt-KB3)
 2. Kt-QB3 P-K3	    (2.	P-QB4  P-K3  )
 3. P-Q4   B-Kt5    (3.	Kt-QB3 B-Kt5 )

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