Chess Board
[ECO code D11]
TRANSPOSITION
SLAV to SEMI-SLAV DEFENCE (Main line)
Black's Semi-Slav KP to K3(e6) tripled support for his QP but enabled White to avoid the later Meran.
White nevertheless decides to develop his Queen's Knight to QB3(c3) for the Semi-Slav main, rather than the (usual and better) 4.Q-B2 reply. W-Alt.
    White  Black    Transp.White Black
 1. P-Q4   P-Q4		  (1.)
 2. P-QB4  P-QB3    (2.	P-QB4  P-K3 )
 3. Kt-KB3 P-K3!?   (3.	Kt-QB3 P-QB3)
 4. Kt-B3	    (4.	Kt-B3	    )
Continue: Transpose or Undo or Jump or Clear