Chess Board
[ECO code D00]
TRANSPOSITION
QUEEN'S PAWN GAME to CARO-KANN DEFENCE
White's KP attacked Black's QP in a rarer sacrificial move, likely planning the Blackmar-Diemer Gambit (dubious at professional level).
Black declines the KP offer but transposes into the Caro-Kann Defence main line by pushing his QBPawn out to QB3(c6) supporting his QP. B-Alt.
    White  Black    Transp.White Black
 1. P-Q4   P-Q4	    (1.	P-K4   P-QB3)
 2. P-K4!? P-QB3    (2.	P-Q4   P-Q4 )
Continue: Transpose or Undo or Jump or Clear