Chess Board
[ECO code E06] Move Move Move Here
CATALAN OPENING
(Closed to) Open Variation (alt. route)
White has developed his KKt to KB3(f6) (despite it blocking his KB fianchetto awhile), enabling 6.0-0.
Black seeks slightly more open play, taking White's QBP on QB5(c4) with his Queen's Pawn. B-Alt.
     White   Black
 1.  P-Q4    Kt-KB3
 2.  P-QB4   P-K3
 3.  P-KKt3  P-Q4
 4.  B-Kt2   B-K2
 5.  Kt-KB3  PxP    Main 6B,5B 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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