Chess Board
[ECO code C42] Move Move Move Here Move Here
PETROFF'S DEFENCE
Russian Three Knights Variation
White's KB3(f3) knight captured the undefended Black KP on K5(e5) and targeted the Black king's field's weak (ie. least defended) pawn on KB7(f7).
Black castles, bringing his King's Rook into play, and improves his KBP defence in the process.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	Kt-B3	B-Kt5
 4.	KtxP	0-0
WHITE to Move or Undo or Jump or Clear
 
Do not scroll the screen...!  
You can do better than that! Try another move!!

- press your browser "back" button to see the board again -
(ignore if you scrolled to here)