Chess Board
[ECO code C41]
TRANSPOSITION
PHILIDOR DEF. (Jaenisch C/A) to RUY LOPEZ (Steinitz)
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 P-Q3	    (2.	Kt-KB3 Kt-QB3)
 3. P-Q4   Kt-KB3   (3.	B-Kt5  P-Q3  )
 4. Kt-B3  Kt-B3    (4.	P-Q4   B-Q2  )
 5. B-QKt5 B-Q2	    (5.	Kt-B3  Kt-B3 )
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