It is mainly used to avoid highly theoretical lines such as the Ruy Lopez, or to surprise the opponent.
State Opening of Parliament | 2012 Summer Olympics opening ceremony | Opening Ceremony | 2008 Summer Olympics opening ceremony | 2008 Summer Olympics Opening Ceremony | 2000 Summer Olympics opening ceremony | The opening of the 2009 final of Coupe de France at Stade de France, seeing ''La Garde Républicaine'' performing ''Tri Martolod'' and ''Bro Gozh ma Zadoù | ''The Demonologist: The Extraordinary Career of Ed and Lorraine Warren'' by Gerald Brittle was released as an ebook for the opening of ''The Conjuring (film) | Opening shot from ''Dr. Strangelove | Opening credits | Opening ceremony | Bishop's Opening | Assisted-opening knife | 2010 Winter Olympics opening ceremony | 2010 Commonwealth Games opening ceremony | 2004 Summer Olympics opening ceremony |
If a game starts 1.a3 e5 2.e4 Nf6 3.Nc3, Black cannot proceed in Ruy Lopez-fashion, and if Black plays 3..
In the second part, López introduces the word gambit and gives some openings that had not been previously published: the King's Gambit, some variations of the Bishop's Opening, and what is now known as the Steinitz Defense in the Ruy Lopez.