Chess Board
[ECO code E47] Move Move Move Here
NIMZO-INDIAN DEF. - Rubinstein Sys.
Bishop Attack - main line (alt. route)
White develops his King's Knight to KB3(f3), increases his QP defence and enables castling.
Black advances his Queen's Pawn to Q4(d5), the move best delayed in the 4.P-K3 system until after White's B-Q3, and resumes control of K5(e4).
    White  Black	White  Black
 1. P-Q4   Kt-KB3    5. B-Q3   P-B4
 2. P-QB4  P-K3	     6.	Kt-B3  P-Q4
 3. Kt-QB3 B-Kt5
 4. P-K3   0-0	   Main 6WB,5WB route
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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