Chess Board
[ECO code B21] Move Move Here
SICILIAN DEFENCE
Philidor Variation

White advanced his KBP to KB4(f4) in a rare move no longer recommended in the modern age.
Black takes the opportunity to push his King's Pawn out to support a 3..P-Q4 advance against White's king's pawn, frees his KB to support his QBP and also enables 3..Q-KR5+ch. B-Alt.
     White   Black
 1.  P-K4    P-QB4
 2.  P-KB4   P-K3  Transp.from French

WHITE to Move or Undo or Jump or Clear
 
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