Ruy Lopez: Open, Harksen Gambit

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.c4

ECO C80

The Ruy Lopez: Open, Harksen Gambit is a chess opening line in the Ruy Lopez complex, reached after 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.c4.

It is catalogued under code C80 in the Encyclopaedia of Chess Openings (ECO).

The defining move c4 is chosen by White on move 8.

The Ruy Lopez: Open, Harksen Gambit is a line of the Ruy Lopez. The Ruy Lopez, also called the Spanish Game, is a chess opening that begins 1.e4 e5 2.Nf3 Nc6 3.Bb5. Read the complete Ruy Lopez guide: what it is, how to reach it, its main variations, how to play against it, and its history.

Study this line with a grandmaster

This position is covered in the Marshall Attack course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.