Chess Board
[ECO code C65]
RUY LOPEZ TRANSPOSITION
BERLIN (Beverwijk V.) to CLASSICAL (Benelux V.)
Black combined a 'Classical' KB with a 'Berlin' KKt.
White often transposes towards the Benelux line at this point by pushing his QBPawn out a square to QB3(c3) in support of 6.P-Q4. W-Alt.
    White  Black    Transp.White Black
 1. P-K4   P-K4		  (1.)
 2. Kt-KB3 Kt-QB3	  (2.)
 3. B-Kt5  Kt-B3    (3.	B-Kt5  B-B4 )
 4. 0-0	   B-B4	    (4.	P-B3   Kt-B3)
 5. P-B3	    (5.	0-0	    )
Continue: Transpose or Undo or Jump or Clear