Chess Board
[ECO code A40]
TRANSPOSITION
FRANCO-INDIAN (Keres) DEF. to QUEEN'S GAMBIT
White developed his QKt to a pinned QB3(c3), interposing to relieve Black's early bishop check.
Black transposes into a Queen's Gambit line (likely to become the Nimzo-Indian D.) by a Queen's Pawn to the centre to deter P-K4. Regarded as passive (as giving White several options). B-Alt.
    White  Black    Transp.White Black
 1. P-Q4   P-K3     (1.	P-Q4   P-Q4 )
 2. P-QB4  B-Kt5 ch (2.	P-QB4  P-K3 )
 3. Kt-B3  P-Q4	    (3.	Kt-QB3 B-Kt5)
Continue: Transpose or Undo or Jump or Clear