Chess Board
[ECO code E10]
TRANSPOSITION
BENONI (Blumental V.) to QGD CATALAN/TARRASCH
White set his KP on K3(e3) to defend his threatened QP, and freed his KB to support his QBP.
Black responds by advancing his Queen's Pawn to a defended Q4(d5), attacking White's KP and setting up a Queen's Gambit, Tarrasch Defence.
    White  Black    Transp.White Black
 1. P-Q4   Kt-KB3   (1.	P-Q4   P-Q4  )
 2. P-QB4  P-K3	    (2.	P-QB4  P-K3  )
 3. Kt-KB3 P-B4	    (3.	Kt-KB3 Kt-KB3)
 4. P-K3   P-Q4	    (4.	P-K3   P-B4  )
Continue: Transpose or Undo or Jump or Clear