The Marshall Attack, Original Marshall Attack is a variation of the Ruy Lopez, catalogued as ECO C89. The line runs 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 Nf6, reaching the position shown below after 22 half-moves.
The four central squares are empty of pawns, so the fight for them is being conducted by pieces. Development is level at two minor pieces each, and White is up a pawn of material. It is White to move after 11 moves. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank; the e-file file is fully open.
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 Marshall Attack, Original Marshall Attack goes 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 Nf6. It is a variation of the Ruy Lopez and is catalogued as ECO C89.
The Marshall Attack, Original Marshall Attack is ECO C89. 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 Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 Nf6 at +0.48 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.
The four central squares are empty of pawns, so the fight for them is being conducted by pieces. Development is level at two minor pieces each, and White is up a pawn of material. It is White to move. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank; the e-file file is fully open.