Chess Board
[ECO code A17]
TRANSPOSITION
ENGLISH OPG. (Anglo-Indian) to NIMZO-INDIAN DEF.
Black developed his KB to QKt5(b4) to half-pin White's QKt, keeping up the contest for his Q4(d5).
White transposes into the Three Knights Var. of the Nimzo-Indian Defence (qv.) by advancing his Queen's Pawn to the centre. W-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. Kt-B3  B-Kt5    (3.	Kt-QB3 B-Kt5 )
 4. P-Q4	    (4.	Kt-B3	     )
Continue: Transpose or Undo or Jump or Clear