Chess Board
[ECO code A20]
TRANSPOSITION
ENGLISH OPG. (Sicilian Nimzo. V.) to QGD Chigorin
White's pawn to Q4(d4) freed his QB to control KKt5(g5), and made a supported attack on Black's KP.
Black advances his own Queen's Pawn to Q4(d5), freeing his QB. A Queen's Gambit Declined, Chigorin Defence counter gambit, superior to 3..PxP, 4.KtxP..B-Kt5+ch, 6.B-Q2..BxB+ch, 7.P-KKt3. B-Alt.
    White  Black    Transp.White Black
 1. P-QB4  P-K4	    (1.	P-Q4    P-Q4  )
 2. Kt-KB3 Kt-QB3   (2.	P-QB4   Kt-QB3)
 3. P-Q4   P-Q4	    (3.	Kt-KB3  P-K4  )
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