Key Anti-Marshall Line for White
Main line: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.h3
Annotated Anti-Marshall Moves (from 1.e4 PGN)
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1.e4
White starts with 1.e4, taking space in the centre and opening lines for the queen and bishop.
1...e5
Black copies White in the centre and also opens lines for their pieces.
2.Nf3
White attacks the e5-pawn and develops a knight toward the centre, getting ready to castle.
2...Nc6
Black defends the e5-pawn with a knight and brings another piece into the game.
3.Bb5
The Ruy Lopez. White pins the knight on c6, which helps protect the e5-pawn.
3...a6
Black attacks the bishop on b5, asking it to decide where to go.
4.Ba4
White keeps the bishop on the a4–e8 diagonal, still watching the knight on c6.
4...Nf6
Black develops a knight and attacks the e4-pawn, entering a main Ruy Lopez structure.
5.O-O
White castles, putting the king safely on g1 and connecting the rooks.
5...Be7
Black chooses the Closed Spanish setup with Be7, preparing to castle.
6.Re1
White protects the e4-pawn with the rook and keeps the c3 square free for a pawn later.
6...b5
Black gains space on the queenside and chases the bishop from a4.
7.Bb3
White keeps the bishop on the a2–g8 diagonal, aiming toward Black's king.
7...O-O
Black castles and brings the king to safety.
8.h3
White plays h3 to stop ...Bg4 and, most importantly, to avoid the Marshall Attack pawn sacrifice with ...d5 in one go.