Larsen's Opening

Larsen's Opening (also called the Queen's Fianchetto Opening) is a chess opening starting with the move:

It is named after the Danish grandmaster Bent Larsen. Larsen was inspired by the example of the great Latvian-Danish player and theoretician Aron Nimzowitsch (1886–1935), who often played 1.Nf3 followed by 2.b3, which is sometimes called the Nimzowitsch–Larsen Attack. It is classified under the A01 code in the Encyclopaedia of Chess Openings.