Chess Board
[ECO code D35]
TRANSPOSITION
ORTHO-QGD. to NIMZO-INDIAN DEF. (Rubinstein S.)
White's king's pawn push out to K3(e3) freed his KB to defend his QBP, and supported his QP.
Black develops his King's Bishop to pin White's QKt, deter 5.P-K4 and enable ..0-0, and transposes into the Nimzo-Indian Def. Rubinstein System.
    White  Black    Transp.White Black
 1. P-Q4   P-Q4	    (1.	P-Q4   Kt-KB3)
 2. P-QB4  P-K3	    (2.	P-QB4  P-K3  )
 3. Kt-QB3 Kt-KB3   (3.	Kt-QB3 B-Kt5 )
 4. P-K3   B-Kt5    (4.	P-K3   P-Q4  )
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