Chess Board
[ECO code B13 > 14] Move Move Move Here Move Here
Exchange Variation

White's KP removed Black's QP on Q5(d5), a line regarded as inferior to the positional 3.Kt-QB3 but popular as usually leading to the Panov Attack.
Black's QBPawn completes the exchange on Q4(d5), removing White's newly doubled QP for a resulting fixed centre (ie. mutually blocked pawns).
	White	Black
 1.	P-K4	P-QB3
 2.	P-Q4	P-Q4
 3.	PxP	PxP

WHITE to Move or Undo or Jump or Clear
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