The Two Knights Defense, Knorre Variation is a variation of the Italian Game, catalogued as ECO C59. The line runs 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Bd6 11. d4 Qc7 12. Bd2, reaching the position shown below after 23 half-moves.
Both sides have pawns in the centre (White on d4, Black on e4). Development is level at three minor pieces each, and White is up a pawn of material. It is Black to move after 12 moves. Black’s a- and c-files pawns are isolated.
On the Italian Game generally: A classical opening focusing on rapid development and control of the center with pieces.
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The Two Knights Defense, Knorre Variation goes 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Bd6 11. d4 Qc7 12. Bd2. It is a variation of the Italian Game and is catalogued as ECO C59.
The Two Knights Defense, Knorre Variation is ECO C59. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Italian Game.
Stockfish evaluates the position after 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Bd6 11. d4 Qc7 12. Bd2 at +0.28 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 d4, Black on e4). Development is level at three minor pieces each, and White is up a pawn of material. It is Black to move. Black’s a- and c-files pawns are isolated.