Chess Board
[ECO code D06]
TRANSPOSITION
QGD. MARSHALL DEF. to CATALAN OPENING
White pushes his King's Knight's Pawn forward, intending to fianchetto his king's bishop. W-Alt.
Black transposes into the main line of the Catalan by a King's Pawn push out to K3(e6), tripling support for his Q4(d5) centre and freeing his KB.
    White  Black    Transp.White Black
 1. P-Q4   P-Q4     (1. P-Q4   Kt-KB3)
 2. P-QB4  Kt-KB3   (2. P-QB4  P-K3  )
 3. P-KKt3 P-K3	    (3. P-KKt3 P-Q4  )
Continue: Transpose or Undo or Jump or Clear