Chess Board
[ECO code C21]
TRANSPOSITION
CENTRE GAME to SCOTCH GAME (main line)
White developed his KKt for a Q-supported attack against Black's newly doubled QP on Q5(d4).
Black transposes into the Scotch Game main by developing his Queen's Knight to defend his forward doubled QP. B-Alt.
    White  Black    Transp.White Black
 1. P-K4   P-K4		   (1.)	
 2. P-Q4   PxP		   (3.)
 3. Kt-KB3 Kt-QB3	   (2.)
Continue: Transpose or Undo or Jump or Clear