Chess Board
[ECO code D31] Move Move Here
QUEEN'S GAMBIT - Petrosian Var.
Exchange Variation
White's QBPawn removed Black's QP on Q5(d5), attacked his KP and invited a pawn exchange.
Black's King's Pawn on K3(e6) duly removes the newly doubled White QP, creating a fixed centre (ie. mutually blocked pawns) and unblocking his QB.
	White	Black
 1.	P-Q4	P-Q4
 2.	P-QB4	P-K3
 3.	Kt-QB3	B-K2
 4.	PxP	PxP
WHITE to Move or Undo or Jump or Clear
 
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