Chess Board
[ECO code C24]
TRANSPOSITION
BISHOP'S OPG. (Berlin D.) to VIENNA (Max Lange)
White advanced a pawn to KB4(f4) as in most Vienna lines but here as a defended threat, and a King's Gambit Declined line outcome is likely!
Black develops his Queen's Knight to QB3(c6) doubling his KP support in anticipation of 6.Kt-KB3.
    White  Black    Transp.White Black
 1. P-K4   P-K4		  (1.)
 2. B-B4   Kt-KB3   (2.	Kt-QB3 Kt-KB3)
 3. P-Q3   B-B4	    (3.	B-B4   Kt-B3 )
 4. Kt-QB3 P-Q3	    (4.	P-Q3   B-B4  )
 5. P-B4   Kt-B3    (5.	P-B4   P-Q3  )
Continue: Transpose or Undo or Jump or Clear