Chess Board
[ECO code D31]
TRANSPOSITION
ORTHODOX QGD. to NIMZO-INDIAN DEF. (Noa V.)
White developed (probably best) an aggressive queen to QB2(c2) to enable 5.P-K4.
Black transposes into the Noa line of the Nimzo-Indian Defence by developing his King's Knight to KB3(f6), preventing 5.P-K4 and enabling castling.
    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 B-Kt5    (3.	Kt-QB3 B-Kt5 )
 4. Q-B2   Kt-KB3   (4.	Q-B2   P-Q4  )
Continue: Transpose or Undo or Jump or Clear