Chess Board
[ECO code B20] Move Move Here
SICILIAN DEFENCE
Sicilian Centre Game - Transpositional Line
White's early and aggressive QP advance to the centre freed his QB and attacked Black's QBP.
Black sometimes declines the immediate QP to avoid the Morra Gambit and instead sets his own QPawn on Q3(d6) to support his QBP, free his QB and deter 3.P-K5, seeking to transpose between lines. B-Alt.
     White   Black
 1.  P-K4    P-QB4
 2.  P-Q4!?  P-Q3   Alt. 2WB,1WB route
WHITE to Move or Undo or Jump or Clear
 
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