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[ECO code A52] Move Move Move Here Move Here
The Rubinstein Variation

Black's KB3(f6) knight to KKt5(g4) reversed the doubled KP attack and targeted White's KBP.
White develops his Queen's Bishop to defend his doubled KP and enable 4..B-B4, 5.P-K3 freedom after it, starting a strategy to keep the extra pawn. W-Alt.
	White	Black
 1.	P-Q4	Kt-KB3
 2.	P-QB4	P-K4
 3.	PxP	Kt-Kt5
 4.	B-B4

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