Chess Board
[ECO code C42] Move Move Here
PETROFF'S DEFENCE
Ruy Lopez Variation

White advances his Queen's Pawn to the centre to defend his knight against 4..QxKt, and frees his QB.
Black sets his Queen's Pawn on Q3(d6), doubles the attack on White's centre knight and frees his QB.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	KtxP	Q-K2
 4.	P-Q4	P-Q3

WHITE to Move or Undo or Jump or Clear
 
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