Chess Board
[ECO code C41] Move Move Here
TRANSPOSITION
PHILIDOR DEF. (Jaenisch C/A) to LOPEZ FOUR KTS.
Black developed his QKt to defend his KP, risking a QKt pin or an exchange of centre Ps and then Qs.
White adopts the Ruy Lopez, developing his King's Bishop to QKt5(b5) to pin the QKt, and enables 0-0.
    White  Black    Main via Lopez 4Kts
 1. P-K4   P-K4		  (1.)
 2. Kt-KB3 P-Q3	    (2.	Kt-KB3 Kt-QB3)
 3. P-Q4   Kt-KB3   (3.	Kt-B3   Kt-B3)
 4. Kt-B3  Kt-B3    (4.	B-Kt5   P-Q3 )
 5. B-QKt5	    (5.	P-Q4	     )
BLACK to Move or Undo or Jump or Clear
 
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