Chess Board
[ECO code D31] Move Move Here
QUEEN'S GAMBIT - Petrosian Var.
Exchange Variation
Black's KP on K3(e6) exchanged, removing White's newly doubled QP and freeing Black's QB.
White develops his Queen's Bishop to KB4(f4) to control K5(e5), planning a pawns advance to gain K-side space by 5..P-QB3 [or 5..Kt-KB3] 6.P-K3..B-KB4.
    White  Black	White  Black
 1. P-Q4   P-Q4	     5.	B-B4
 2. P-QB4  P-K3
 3. Kt-QB3 B-K2
 4. PxP	PxP
BLACK to Move or Undo or Jump or Clear
 
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