The Open, Howell Attack, Ekstrom Variation is a variation of the Ruy Lopez, catalogued as ECO C81. The line runs 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 O-O 11. c4 bxc4 12. Bxc4 Qd7, reaching the position shown below after 24 half-moves.
Both sides have pawns in the centre (White on e5, Black on d5). Black is ahead in development, with four minor pieces out to White's two. It is White to move after 12 moves. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank; Black’s a-file pawn is isolated.
On the Ruy Lopez generally: One of the oldest and most classical openings. White develops rapidly and puts pressure on Black's center.
You can play through this variation move by move in your browser — Learn mode walks the line with an explanation at each step, and Drill mode replays it from memory so you find out whether you actually know it. No account is required.
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The Open, Howell Attack, Ekstrom Variation goes 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 O-O 11. c4 bxc4 12. Bxc4 Qd7. It is a variation of the Ruy Lopez and is catalogued as ECO C81.
The Open, Howell Attack, Ekstrom Variation is ECO C81. 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. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 O-O 11. c4 bxc4 12. Bxc4 Qd7 at +0.49 at depth 18, which is a slight pull for White, within normal opening margins. 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 e5, Black on d5). Black is ahead in development, with four minor pieces out to White's two. It is White to move. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank; Black’s a-file pawn is isolated.