Chess Board
[ECO code C42] Move Move Here
PETROFF'S DEFENCE
Russian Three Knights Variation
Black castled, bringing his king's rook into play, and improved his KBP defence in the process.
White developing his King's Bishop to a "closed" K2(e2) shields his king and enables castling. W-Alt.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	Kt-B3	B-Kt5
 4.	KtxP	0-0
 5.	B-K2
BLACK to Move or Undo or Jump or Clear
 
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