Library/Openings/Ruy Lopez/Open/Knorre Variation ECO C80
Opening· 11 plies

Ruy Lopez: Open, Knorre Variation

An entry in the Encyclopedia of Chess Openings (ECO C80), reached after 11 half-moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. Nc3.

Ruy Lopez: Open, Knorre Variation ECO C80
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Black rook
Black bishop
Black queen
Black king
Black bishop
Black rook
Black pawn
Black pawn
Black pawn
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Black pawn
Black pawn
Black pawn
Black knight
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White bishop
Black knight
White knight
White knight
White pawn
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White pawn
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White pawn
White pawn
White rook
White bishop
White queen
White rook
White king
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End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

Ruy Lopez: Open, Knorre Variation is an opening in the Encyclopedia of Chess Openings, classified under code C80. ECO group C (C00–C99) covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached after 11 half-moves from the starting position, with the move sequence 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. Nc3.

It belongs to the Ruy Lopez family. Within that family this is a level-2 branch (the Open → Knorre Variation line). The immediate parent line is Ruy Lopez: Open, transitioned via 6.Nc3.

The opening sequence in prose form: 1.e4 e5, 2.Nf3 Nc6, 3.Bb5 a6, 4.Ba4 Nf6, 5.O-O Nxe4, 6.Nc3. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.