Chess Board
[ECO code C67] Move Move Here
RUY LOPEZ TRANSPOSITION
BERLIN DEF. (Side V.) to OPEN MORPHY (Riga Var.)

Black, forced to counterattack, set an inferior QRP on QR3(a6) to dislodge White's QKt5(b5) bishop.
White's Bishop retreat to an equally inferior QR4(a4) transposes from the Open Berlin into the Riga line of the Open Morphy. W-Alt.
    White  Black	White  Black
 1. P-K4   P-K4	     6.	R-K1   P-Q4
 2. Kt-KB3 Kt-QB3    7.	KtxP   P-QR3?!
 3. B-Kt5  Kt-B3     8. B-R4?!
 4. 0-0	   KtxP
 5. P-Q4   PxP?!   Main 3..P-QR3 route

BLACK to Move or Undo or Jump or Clear
 
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