Chess Board
[ECO code B01]
TRANSPOSITION
CENTRE-CTR.GAME to BLACKMAR-DIEMER GAMBIT
Black's QPawn challenged White's KP directly.
White declines the usual 2.PxP and transposes into a Queen's Pawn Game that presages the inferior (and perhaps dubious) Blackmar-Diemer Gambit by advancing his Queen's Pawn to the centre - also inviting further transpositions. W-Alt.
    White  Black    Transp.White Black
 1. P-K4   P-Q4	    (1.	P-Q4  P-Q4)
 2. P-Q4?!	    (2.	P-K4?!	  )
Continue: Transpose or Undo or Jump or Clear