Chess Board
[ECO code A00]
TRANSPOSITION
KING'S FIANCHETTO to BARCZA SYSTEM

Black advanced his QP to control QB5+K5 (c4+e4) and freed his QB for potential ..B-B4 or ..B-Kt5 uses.
White develops his King's Knight to KB3(f3) to deter ..P-Q5 or ..P-K4, adopting the Barcza (a system where he tries to withhold either P-QB4 or P-Q4 until Black has committed himself to a formation allowing White to transpose into his own preferred variant).
    White   Black   Transp.White Black
 1. P-KKt3  P-Q4    (1.	Kt-KB3  P-Q4)
 2. Kt-KB3	    (2.	P-KKt3	    )

Continue: Transpose or Undo or Jump or Clear