The Closed, Worrall Attack, Castling Line is a variation of the Ruy Lopez, catalogued as ECO C86. The line runs 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 Be7 6. O-O b5 7. Bb3 O-O 8. c3 d5 9. d3, reaching the position shown below after 17 half-moves.
Both sides have pawns in the centre (White on e4, Black on d5 and e5), and one pawn capture is available, so the structure has not settled yet. Development is level at two minor pieces each. It is Black to move after nine moves. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.
On the Ruy Lopez generally: One of the oldest and most classical openings. White develops rapidly and puts pressure on Black's center.
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The Closed, Worrall Attack, Castling Line goes 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 Be7 6. O-O b5 7. Bb3 O-O 8. c3 d5 9. d3. It is a variation of the Ruy Lopez and is catalogued as ECO C86.
The Closed, Worrall Attack, Castling Line is ECO C86. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Ruy Lopez.
Stockfish evaluates the position after 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 Be7 6. O-O b5 7. Bb3 O-O 8. c3 d5 9. d3 at -0.14 at depth 18, which is balanced. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
Both sides have pawns in the centre (White on e4, Black on d5 and e5), and one pawn capture is available, so the structure has not settled yet. Development is level at two minor pieces each. It is Black to move. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.