Chess Board
[ECO code C23]
TRANSPOSITION
BISHOP'S OPENING to ÉPINE DORSALE
Black developed a passive QKt to QB3(c6) to support his KP and increase his control of Q5(d4).
White popularly transposes back into the "Épine Dorsale" stem by developing his King's Knight to KB3(f3) to counter Black's QKt influence and support a likely 4.P-Q4 advance. W-Alt.
    White  Black    Transp.White Black
 1. P-K4   P-K4		  (1.)
 2. B-B4   Kt-QB3   (2.	Kt-KB3 Kt-QB3)
 3. Kt-KB3	    (3.	B-B4	     )
Continue: Transpose or Undo or Jump or Clear