Chess Board
[ECO code C21]
TRANSPOSITION
CENTRE GAME to GRECO DEF./SCOTCH GAME
White developed his KKt for a Q-supported attack against Black's newly doubled QP on Q5(d4).
Black rarely transposes into a Greco Defence variation by developing his Queen early to KB3(f6), offering a 4.KtxP exchange that can bring the Scotch Game avoiding the Scotch Gambit. B-Alt.
    White  Black    Transp.White Black
 1. P-K4   P-K4		   (1.)	
 2. P-Q4   PxP		   (3.)
 3. Kt-KB3 Q-B3		   (2.)
Continue: Transpose or Undo or Jump or Clear