Chess Board
[ECO code A46]
TRANSPOSITION
(OLD) BENONI DEF. to ENGLISH OPG. (Symm. Def.)
Black advanced his QBP to QB4(c5), attacked White's QP and freed his queen, enabling ..Q-R4+ch although the move is often just transpositional.
White transposes into the Anti-Benoni Variation of the English Opening by advancing his QBPawn to QB4(c4) W-Alt.
    White  Black    Transp.White Black
 1. P-Q4   Kt-KB3   (1.	P-QB4  P-QB4 )
 2. Kt-KB3 P-B4	    (2.	Kt-KB3 Kt-KB3)
 3. P-QB4	    (3.	P-Q4	     )
Continue: Transpose or Undo or Jump or Clear