Chess Board
[ECO code D37]
QUEEN'S GAMBIT
The Harrwitz Attack - modern form
Black developed his king's bishop to a "closed" K2(e7), a rarer move but enabling rapid castling.
White develops his Queen's Bishop to KB4(f4) to triple K5(e5) control - the modern Harrwitz. W-Alt.
     White   Black
 1.  P-Q4    P-Q4
 2.  P-QB4   P-K3
 3.  Kt-QB3  Kt-KB3
 4.  Kt-B3   B-K2
 5.  B-B4	  Orig. 5W,4W route
Example ends: Undo or Jump or Clear