Chess Board
[ECO code C30]
TRANSPOSITION
KGD. (Petrov's Def.) to ALAPIN OPENING
Black declined White's KBP gambit with a rarer KKt development counter-attacking White's KP.
White transposes into the Alapin Opg., developing his King's Knight to K2(e2) to defend his earlier gambit KBP while leaving his KP en prise. W-Alt.
    White  Black    Transp.White Black
 1. P-K4   P-K4	    (1.	P-K4   P-K4)
 2. P-KB4  Kt-KB3   (2.	Kt-K2  Kt-KB3)
 3. Kt-K2	    (3.	P-KB4	     )
Continue: Transpose or Undo or Jump or Clear