Chess Board
[ECO code C01] Move Move Move Here
FRENCH DEFENCE
"Symmetrical" Exchange Var. (alt. route)
White and Black both develop their King's Knights to KB3(f3/f6) in support of their queen's pawns, and enable castling on the king's side. W-Alt.
     White   Black
 1.  P-K4    P-K3
 2.  P-Q4    P-Q4
 3.  PxP     PxP
 4.  B-Q3    B-Q3    Main 5B,4B route
 5.  Kt-KB3  Kt-KB3  Alt. 5WB,4WB 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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