Chess Board
[ECO code B07]
TRANSPOSITION
PILLSBURY to SICILIAN DEFENCE
White took up Black's invitation to form a strong classical centre (ie.K4P+Q4P).
Black transposes into a Centre Game variation of the Sicilian Defence by advancing his Queen's Bishop's Pawn to QB4(c5) challenging White's QP. B-Alt.
    White Black	    Transp.White Black
 1. P-K4  P-Q3	    (1.	P-K4   P-QB4)
 2. P-Q4  P-QB4     (2.	P-Q4!? P-Q3 )
Continue: Transpose or Undo or Jump or Clear