RUY LOPEZ - The Open Morphy Defence

Board Position
A major continuation of the old but strong Ruy Lopez or Spanish Opening (qv.), the opening where White's starting advantage is said to be held for longer than in any other game.
Often called just "The Open Defence" (and occasionally the Tarrasch), it is reached by Black's attacking 5..KtxKP(Nxe4) (move 5b, left) after the Morphy 3..P-QR3(a6), 4.B-R4(Ba4) bridge and White's castling response to Black's KKt. The defence is also a direct alternative to The Close Morphy (qv.), the Archangel and other 6th move variants.
The main line below leads to the Classical Defence if not the Howell Attack before, while an alternative Italian Variation often leads to the Dilworth Attack.

Begin or Clear or Groups or see move: 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 0-0 to 5..Nxe4

6 d4 b5 7 Bb3 d5 to "Classical" 8 dxe5 Be6 9 c3 Be7 10 Nbd2 0-0 11 Qe2 Nc5 12 Nd4