Chess Board
[ECO code A45]
EAST INDIAN DEF. TRANSPOSITION
TROMPOWSKY OPG. to TORRE ATTACK

Black developed an "Indian" KB fianchetto on KKt2(g7), targeted White's QP and enabled castling.
White transposes into a Torre Attack line (one of several) by developing his King's Knight to KB3(f3) supporting both his QP and K-side bishop. W-Alt.
    White  Black    Transp.White Black
 1. P-Q4   Kt-KB3   (1.	P-Q4   Kt-KB3)
 2. B-Kt5  P-KKt3   (2.	Kt-KB3 P-KKt3)
 3. Kt-Q2  B-Kt2    (3.	B-Kt5  B-Kt2 )
 4. Kt-KB3	    (4.	QKt-Q2	     )

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