Chess Board
[ECO code D06] Move Move Here
QUEEN'S GAMBIT
Marshall Defence

White developed his KKt to support his QP (in case of 4..Kt-QB3) and to control Black's K4(e5).
Black develops his Queen's Bishop to KB4(f5) to prevent 5.P-K4, but his QKtP is now undefended.
     White   Black
 1.  P-Q4    P-Q4
 2.  P-QB4   Kt-KB3
 3.  PxP     KtxP
 4.  Kt-KB3! B-B4   Weak 4WB,3WB route

WHITE to Move or Undo or Jump or Clear
 
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