Chess Board
[ECO code C42] Move Move Here
PETROFF'S DEFENCE
Russian Three Knights Variation
White developing his king's bishop to a "closed" K2(e2) shielded his king and enabled castling.
Black's KB1(f8) Rook to K1(e8) attacks White's centre Kt (and ultimately KP) on the half-open K-file.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	Kt-B3	B-Kt5
 4.	KtxP	0-0
 5.	B-K2    R-K1
WHITE to Move or Undo or Jump or Clear
 
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