Chess Board
[ECO code C43] Move Move Here
PETROFF DEFENCE - Steinitz Attack
(to) Symmetrical Variation
Black's king's knight removed White's king's pawn.
White develops his King's Bishop to Q3(d3) to attack Black's knight, and enables castling. White takes this route (an alternative to 4.KtxP) more often as it limits Black's options. W-Alt.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	P-Q4	KtxP
 4.	B-Q3
BLACK to Move or Undo or Jump or Clear
 
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