Chess Board
[ECO code B01] Move Move Here
The Anderssen Variation

White advanced his QP to the vacant centre, taking control of K5(e5) and freeing his QB.
Black advances his King's Pawn to the centre (rather than the main 4..Kt-KB3), attacking White's QP and freeing his KB to pin the Kt. B-Alt.
	White	Black
 1.	P-K4	P-Q4
 2.	PxP	QxP
 3.	Kt-QB3	Q-QR4
 4.	P-Q4	P-K4

WHITE to Move or Undo or Jump or Clear
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