Chess Board
[ECO code D37] Move Move Here
QUEEN'S GAMBIT TRANSPOSITION
QGD (to Vienna Var.) to QGA (Classical Var.)
White's rarer KPawn push to K3(e3) frees his KB to recoup Black's doubled QBP. W-Alt.
Black's QBPawn advances to a defended QB4(c5) - a Tarrasch/Classical line threating White's QP.
     White   Black
 1.  P-Q4    P-Q4
 2.  P-QB4   P-K3
 3.  Kt-QB3  Kt-KB3
 4.  Kt-B3   PxP
 5.  P-K3    P-B4  Main 5..Kt-KB3 route
WHITE to Move or Undo or Jump or Clear
 
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