Chess Board
[ECO code B41] Move Move Move Here
SICILIAN DEFENCE
Marshall Variation (alt. route)
White develops his King's Bishop to QKt5(b5) to check Black's king, and enables castling.
Black's Queen's Knight develops to QB3(c3) to relieve check.
    White  Black	White  Black
 1. P-K4   P-QB4     6.	B-Kt5 ch Kt-B3
 2. Kt-KB3 P-K3
 3. P-Q4   P-Q4
 4. KPxP   KPxP
 5. Kt-B3  Kt-KB3  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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