Chess Board
[ECO code D02]
TRANSPOSITION
QP. GAME to CATALAN OPG. (Closed Var.)
Black developed his KB to a "closed" K2(e7) for 5..0-0, planning to deploy pieces behind his pawns.
White sets the Catalan (inviting an Open line) by advancing a delayed QBPawn gambit. W-Alt.
    White  Black    Transp.White Black
 1. P-Q4   P-Q4	    (1.	P-Q4   Kt-KB3)
 2. Kt-KB3 P-K3	    (2.	P-QB4  P-K3  )
 3. P-KKt3 Kt-KB3   (3.	P-KKt3 P-Q4  )
 4. B-Kt2  B-K2	    (4.	B-Kt2  B-K2  )
 5. P-B4	    (5.	Kt-KB3	     )
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