The Main Line is a variation of the Scotch Game, catalogued as ECO C45. The line runs 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nb5 Bb4+ 6. Bd2, reaching the position shown below after 11 half-moves.
White holds the centre with pawns on e4. Development is level at two minor pieces each. It is Black to move after six moves.
On the Scotch Game generally: An open game where White immediately challenges Black's center. Leads to active piece play.
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 Main Line goes 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nb5 Bb4+ 6. Bd2. It is a variation of the Scotch Game and is catalogued as ECO C45.
The Main Line is ECO C45. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Scotch Game.
Stockfish evaluates the position after 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nb5 Bb4+ 6. Bd2 at +0.09 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.
White holds the centre with pawns on e4. Development is level at two minor pieces each. It is Black to move.