Chess Board
[ECO code B30] Do not scroll the screen..! Move Move Move Here
SICILIAN DEFENCE
Rossolimo Variation
White developed his KB to half-pin Black Q-side knight, rather than advance his QP in the main line.
Black pushes his Queen's Pawn out to support his QBP against an expected P-Q4, and frees his QB (although his Kt is now fully pinned). B-Alt.
     White   Black
 1.  P-K4    P-QB4
 2.  Kt-KB3  Kt-QB3
 3.  B-Kt5   P-Q3   Alt. 3B,2B 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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