Chess Board
[ECO code C23]
TRANSPOSITION
(CLASSICAL) BISHOP'S OPG. to VIENNA GAME
Black's KB shadowed White's early bishop move, often planning ..P-Q3 behind it.
White adopts a Vienna Game transposition path by developing his Queen's Knight to QB3(c3), giving support to his KP and tripling his control of Black's Q4(d5). W-Alt.
    White  Black    Transp.White Black
 1. P-K4   P-K4		  (1.)
 2. B-B4   B-B4	    (2.	Kt-QB3 B-B4)
 3. Kt-QB3	    (3.	B-B4	   )
Continue: Transpose or Undo or Jump or Clear