Chess Board
[ECO code D31] Do not scroll the screen..! Move Move Move Here Move Here Move Here
QUEEN'S GAMBIT - Petrosian Var.
(to) Harrwitz Attack
White developed his KKt, resuming control of KKt5(g5) while still leaving his QBP en prise.
Black develops King's Knight to KB3(f6), triples his QP support, controls K5(e4) to deter 5.P-K4, and enables rapid castling. He risks the 5.B-B4 Harrwitz.
     White   Black
 1.  P-Q4    P-Q4
 2.  P-QB4   P-K3
 3.  Kt-QB3  B-K2
 4.  Kt-B3   Kt-KB3  Main 4B,3B route
WHITE to Move or Undo or Jump or Clear
 
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Chess Board

WHITE moves Queen's Bishop:

B-B4 (Bf4) or B-Kt5 (Bg5) ?

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