Chess Board
[ECO code C47]
TRANSPOSITION
SCOTCH 4KTS. GAME to RUY LOPEZ (Steinitz D.)

White adopted the Lopez 4Kts, deploying his king's bishop to QKt5(b5) to pin the QKt, and enabled 0-0.
Black reaches the (Old) Steinitz Defence by developing his Q-Bishop to Q2(d7) halving the pin.
    White  Black    Transp.White Black
 1. P-K4   P-K4		  (1.)
 2. Kt-KB3 Kt-QB3	  (2.)
 3. Kt-B3  Kt-B3    (3.	B-Kt5  P-Q3 )
 4. P-Q4   P-Q3	    (4.	P-Q4   B-Q2 )
 5. B-QKt5 B-Q2	    (5.	Kt-B3  Kt-B3)

Continue: Transpose or Undo or Jump or Clear