Chess Board
[ECO code A81] Do not scroll the screen..! Move Move Move Here
DUTCH INDIAN
Leningrad System

White's king's knight deployed to KB3(f3) doubled his control of Q4+K5(d4+e5) and enabled castling.
Black fianchettoes his "Indian" King's Bishop into place on KKt2(g7) to dominate the long dark diagonal and target White's QP in particular.
	White	Black
 1.	P-Q4	P-KB4
 2.	P-KKt3	Kt-KB3
 3.	B-Kt2	P-KKt3
 4.	Kt-KB3	B-Kt2

WHITE to Move or Undo or Jump or Clear
 
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When castling always touch the king first
Under FIDE laws of chess, if a player deliberately touches a rook and then his king, he is not allowed to castle on that side on that move but must still move the rook if legally possible.

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