Chess Board
[ECO code C72]
RUY LOPEZ TRANSPOSITION
STEINITZ DD. to CLOSE MORPHY (Averbakh Var.)

White's KB1(f1) Rook moves to the king's file to support his KP in anticipation of 7..Kt-B3.
Black develops his King's Knight to KB3(f6), threatens White's KP and enables castling.
    White  Black    Transp.White Black
 1. P-K4   P-K4		(1.)
 2. Kt-KB3 Kt-QB3	(2.)
 3. B-Kt5  P-QR3	(3.)
 4. B-R4   P-Q3	    (4.	B-R4   Kt-B3)
 5. 0-0	   B-K2	    (5.	0-0    B-K2 )
 6. R-K1   Kt-B3    (6.	R-K1   P-Q3 )

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